The 19th International Workshop on Neutrinos from Accelerators (NUFACT2017)

25 Sept 2017, 08:00 → 30 Sept 2017, 15:00 Europe/Stockholm

Uppsala University Main Building

NUFACT2017 is the nineteenth in the series of yearly international workshops which started in 1999 and which until now was called International Workshop on Neutrino Factories. The change of name to International Workshop on Neutrinos from Accelerators is related to the fact that the workshop program has, over the years, come to include all current and future accelerator and also reactor based neutrino projects, including also muon projects, not only the Neutrino Factory project. The main goal of the workshop is to review the progress of current and future facilities able to improve on measurements of the properties of neutral and charged lepton flavor violation, as well as searches for new phenomena beyond the capabilities of presently planned experiments. The workshop is both interdisciplinary and inter-regional in that experimenters, theorists and accelerator physicists from the Asian, American and European regions share expertise with the common goal of reviewing the results of currently operating experiments and designing the next generation of experiments. The NUFACT 2017 workshop is divided into five Working Groups covering the following topics: Working Group 1: Neutrino Oscillation Physics Working Group 2: Neutrino Scattering Physics Working Group 3: Accelerator Physics Working Group 4: Muon Physics Working Group 5: Neutrinos Beyond PMNS. This workshop is sponsored by the Nobel Committee for Physics and co­organized by the EuroNuNet COST Action. Contact: NUFACT2017@physics.uu.se

Conference poster (8MB) NUFACT2017_poster_8MB.pdf

Monday, 25 September

Registration

Plenary session: Welcome and Introduction

Convener: Tord Ekelöf (Uppsala University)

1 Welcome

Speaker: Prof. Johan Tysk (Vice-rector of the Disciplinary Domain of Science and Technology, Uppsala University)

2 Introduction to the Workshop

Speaker: Tord Ekelöf (Uppsala University)

Slides NUFACT2017_Intoduction_to_the_Workshop_Tord_Ekelof.pdf NUFACT2017_Intoduction_to_the_Workshop_Tord_Ekelof.pptx

3 Overview of Neutrino Physics

Speaker: André de Gouvêa (Northwestern University)

Slides NuFact2017_degouvea.pdf

Coffee break

Plenary session

Convener: Takashi Kobayashi

4 Status of Accelerator-Based Neutrino Physics

Speaker: Marco Zito (IRFU/SPP CEA Saclay)

Slides nufact17-MZ-v1.pdf

5 Status of Current High Power Proton Drivers for Neutrino Beams

Speaker: Dr Yoichi Sato (KEK/J-PARC)

Slides Nufact2017_current_proton_drivers_YSato.pptx

6 Status of Future High Power Proton Drivers for Neutrino Beams

Speaker: Ciprian Plostinar (ESS)

Slides High Power Proton Drivers

7 Leptogenesis and CP violation

Speaker: Pilar Hernandez (University of Valencia)

Slides nufact17.pdf

Lunch break

WG1: Neutrino oscillation physics: Reactors

Convener: Dr Miao He (IHEP)

8 Latest results of the Double Chooz reactor neutrino experiment

Speaker: Dr Cecile Jollet (IPHC Strasbourg)

Slides Jollet-NuFact-DC.pdf

9 Recent Results from RENO

Speaker: Prof. Myoung Youl Pac (Dongshin University)

Slides NUFACT_RENO.pdf

10 Latest results from the Daya Bay experiment

Speaker: J. Pedro Ochoa (Pontifical Catholic University of Chile)

Slides nufact2017_dyb_ochoaricoux.pdf

11 Physics prospects of the JUNO experiment

Speaker: Barbara Clerbaux (Université Libre de Bruxelles (ULB))

Slides Juno_NuFact_Clerbaux.pdf Juno_NuFact_Clerbaux.pdf

12 Status of the JUNO experiment

Speaker: J. Pedro Ochoa (Pontifical Catholic University of Chile)

Slides nufact2017_JUNO_OchoaRicoux.pdf

WG2: Neutrino scattering physics

Convener: Dr Marco Martini (ESNT, CEA, IRFU, Université de Paris-Saclay)

13 Recent Results from the MINERvA Experiment

The MINERvA experiment, located in the NuMI beamline at Fermilab, is a dedicated neutrino scattering experiment. That main goal is make high precision measurements of neutrino interaction cross sections in the 1 to 20 GeV energy range, to support current and future oscillation experiments. MINERvA also provides information about the structure of protons and neutrons, and the dynamics that affect neutrino-nucleus interactions. The heart of the MINERvA detector is a fine-grained scintillator tracking chamber, surrounded by electromagnetic and hadronic calorimeters. Carbon, Iron and Lead targets are used to study the effect of the nuclear medium on neutrino-induced interactions. This talk presents a summary of the more recent MINERvA results.

Speaker: Edgar Valencia-Rodriguez (William and Mary)

Slides NUFACT_2017_v04.pdf

14 T2K recent results of cross section measurements

Speaker: Ciro Riccio (Napoli University)

Slides Riccio_NUFACT2017.pdf

15 NOvA recent results of cross section measurements

Speaker: Dr Linda Cremonesi (University College London)

Slides LCremonesi_NOvAxsec_NuFact2017_v3.pdf

16 Status of Monte Carlo Generators

Speaker: Yoshinari Hayato (Tokyo University)

Slides 20170925_Genetator_NuFact.pdf

WG3: Accelerator physics: Current Beamlines and Their Upgrades

Convener: Prof. Alan Bross (Fermilab)

17 Operational Experience of J-PARC Neutrino Beamline

Speaker: Ken Sakashita (KEK)

Slides jparc_nu_operation.20170925.pdf

18 Upgrade of J-PARC Accelerator and Neutrino Beamline toward 1.3 MW

Speaker: Prof. Tetsuro Sekiguchi (KEK)

Slides NUFACT2017_WG3.sekiguchi.pdf

19 Beam Delivery for the Fermilab Mu2e Experiment

Speaker: Kevin Lynch (York College, CUNY)

Slides 2017-nufact17-expanded.pdf

20 Status of the LBNF Beamline

Speaker: Tristan Davenne (RAL)

Slides status_of_the_LBNF_beamline.pdf

WG4: Muon physics: Muon cLFV

Convener: Craig Group (University of Virginia)

21 Status and prospects of charged lepton flavor violation searches with the MEG-II experiment

The MEG experiment took data at the Paul Scherrer Institut in the years 2009-2013 and published the most stringent limit on the charged lepton flavor violating decay $\mu \rightarrow e \gamma$: BR($\mu \rightarrow e \gamma$) $<4.2 \times 10^{-13}$ $@90\%$ C.L. The MEG detector is currently being upgraded in order to reach a sensitivity of $\sim 4 \times 10^{-14}$, which corresponds to an improvement of one order of magnitude. The basic idea of MEG-II is to achieve the highest possible sensitivity by making the maximum use ($7\times10^{7}$ muons/s) of the available muon intensity at PSI with an improved detector, keeping the background at a manageable level. The status of the MEG-II detector and the current schedule will be presented. MEG-II, together with the next generation charged lepton flavor violation experiments Mu3e ($\mu^+\rightarrow e^+e^-e^+$) at PSI and Mu2e and COMET ($\mu \rightarrow e$ conversion) at Fermilab and J-PARC respectively, will reach very high sensitivities in the next years. Accelerator upgrades are also expected, that will make muon beams with intensities of the order of $10^{10}$ muons/s feasible. At this extremely high beam rates, new detector concepts should be adopted for $\mu \rightarrow e \gamma$ searches, in order to overcome the accidental background. Some future directions will be discussed.

Speaker: Dr Cecilia Voena (INFN Roma)

Slides voena_Nufact2017.pdf voena_Nufact2017.ppt

22 Searching for Lepton-Flavour Violation with the Mu3e Experiment

The upcoming Mu3e experiment searches for the lepton-flavour violating decay $\mu^+\rightarrow e^+e^-e^+$ with the aim of a final sensitivity of one signal decay in $10^{16}$ observed muon decays, an improvement over the preceding SINDRUM experiment of four orders of magnitude. In the first phase, the experiment will be operated at an existing intense muon beam line at the Paul-Scherrer Institute. With muon stopping rates of about $10^8\text{s}^{-1}$, a single-event sensitivity of $2\cdot 10^{-15}$ can be achieved. For the ultimate sensitivity, a new high intensity muon beam line is required. In order to suppress background, the tracking detector is designed to measure low momentum electron and positron tracks with excellent precision by making use of very thin silicon pixel sensors. In addition, scintillating fibres and tiles provide precise timing information. Currently, the collaboration is finalizing the detector design and preparing for construction and commissioning. The experimental concept with focus on the tracking detector will be outlined and the current status as well as recent simulation results will be presented.

Speaker: Ms Ann-Kathrin Perrevoort (Physics Institute, Heidelberg University)

Slides NuFACT2017_Perrevoort.pdf

23 Mu2e: Using Rare Muon Decays to Probe the Energy Frontier

The Mu2e collaboration proposes to search for coherent, neutrinoless conversion of muons into electrons in the field of a nucleus with a sensitivity improvement of a factor of 10,000 over existing limits. Such a lepton flavor-violating reaction probes new physics at a scale unavailable by direct searches at either present or planned high energy colliders. The physics motivation for Mu2e will be presented, as well as the design of the muon beamline and spectrometer. The scheme by which the experiment is to be mounted in the present Fermilab accelerator complex will be described, and the present status of the experiment will be given.

Speaker: Prof. E. Craig Dukes (University of Virginia)

Slides mu2e_seminar_2017_09_nufact.pptx

24 COMET muon conversion experiment in J-PARC

COMET is an experiment at J-PARC, Japan, which will search for neutrinoless conversion of muons into electrons in the field of a nucleus ($\mu$+N$\to$e+N); a lepton flavor violating process. The experimental sensitivity goal for this process is of order 10$^{-15}$ for Phase-I and 10$^{-17}$ for Phase-II experiment, which is a factor of 100 to 10,000 improvements correspondingly over existing limits. Recent progress in facility and detector development will be presented. The COMET Phase-I experiment has received stage-II approval by the J-PARC PAC, and the future schedule for the start of data taking in 2018 will also be presented.

Speaker: Dr MyeongJae Lee (Institute for Basic Science, Korea)

Slides NUFACT2017-MJLee-COMET.pdf

25 Towards realising PRISM based muon to electron conversion experiment

To maximise discovery potentials of next generation lepton flavour violation experiments high intensity and high quality muon beams are required. Such beams can be produced by sending a short, high intensity proton pulse to the pion production target, capturing pions and collecting the resulting muons in the large acceptance transport system. By applying the RF phase rotation on the muon beam in the dedicated FFAG ring, proposed for the PRISM project, the beam quality can be substantially increased in terms of the momentum spread and purity. The parameters of the required proton beam, the principles of the PRISM experiment and the ring FFAG design are discussed. The spectrum of alternative designs for the experiment are shown. Progress on accelerator systems like beam transport, injection and RF are discussed. The current status of the study and its future directions are presented.

Speaker: Dr Jaroslaw Pasternak (Imperial College London/ISIS-RAL-STFC)

Slides PRISM_nufact17.pdf

WG5: Neutrinos beyond PMNS: Neutrinos and New Interactions

Convener: Prof. Sanjib Kumar Agarwalla (Institute of Physics, Bhubaneswar)

26 Invisible and Visible Neutrino Decay and Constraints on them from Oscillation Experiments

Speaker: Prof. Orlando Luis Goulart Peres (UNICAMP)

Slides decay_nufact2017.pdf

27 Probing the revamped A4 symmetry at long-baseline neutrino experiments

Speaker: Dr Mehedi Masud (Instituto de Fisica Corpuscular)

Slides slides_masud.pdf

28 New upper bound for the neutrino magnetic moment from its Dirac/Majorana nature and Borexino data

Speaker: Juan Barranco (University of Guanajuato)

Slides Barranco_Nufact2017.pdf

29 Fuzzy Dark Matter at neutrino experiments

Speaker: Mr Vedran Brdar (Uni Mainz)

Slides Vedran.pdf

Coffee break

Round table: Round table discussion

Convener: David Wark (University of Oxford)

30 Round Table Discussion

Speakers: André de Gouvêa (Northwestern University), John Womersley (ESS), Prof. Takashi Kobayashi (J-PARC), Tord Ekelöf (Uppsala University), Yifang Wang (IHEP)

Slides NuFact_Round_Table.pptx

Welcome reception

Tuesday, 26 September

Plenary session

Convener: Alex Bogacz

31 Results and Prospects from NOvA

Speaker: Dr Gavin S. Davies (Indiana University)

Slides nufact17_gsdavies_nova_092617.pdf

32 Results and Prospects from T2K

Speaker: Ms Kim Jiae (University of British Columbia)

Slides nufact_t2k_jiaekim.pdf

33 Results and Prospects from Atmospheric and Solar Neutrinos

Speaker: Yusuke Koshio (Okoyama University)

Slides nufact_koshio.pdf

Coffee break

WG1+WG5: joint session: Recent results on eV-sterile searches

Convener: Pilar Hernandez

34 Sterile neutrino search at the NEOS experiment

Speaker: Dr Young Ju Ko (Institute for Basic Science)

Slides NEOS_NUFACT2017.pdf

35 Looking for Sterile Neutrinos via Neutral-Current Disappearance with NOvA

Three-flavor neutrino oscillations have successfully explained a wide range of neutrino oscillation data. However, the excess of events as seen by the LSND and MiniBooNE experiments and the deficit of events seen at the GALLEX and SAGE experiments when exposed to a calibration source can be interpreted as short-baseline neutrino oscillations consistent with the existence of a sterile neutrino state with a mass near 1 eV. While these results are tantalizing, they are not conclusive, as they are in tension with null results from other short-baseline experiments and disappearance searches in long-baseline and atmospheric experiments. Resolving the issue of the existence of light sterile neutrinos has profound implications for both particle physics and cosmology. The NOvA (NuMI Off-Axis $\nu_{e}$ Appearance) experiment may help clarify the situation by searching for disappearance of active neutrinos from the NuMI (Neutrinos from the Main Injector) beam over a baseline of 810 km. In this talk, I will present the latest results from NOvA on searching for oscillations of active neutrinos into sterile neutrinos by looking for a deficit of neutral current events relative to expectations.

Speaker: Prof. Adam Aurisano (University of Cincinnati)

Slides aurisano_nufact2017.pdf

36 Latest Results from MINOS+ on Sterile Neutrinos, and Combined Analysis of MINOS, Daya Bay and Bugey-3

The MINOS/MINOS+ long-baseline neutrino experiment operated at the Fermi Laboratory between 2003 and 2016. The experiment was situated along the central axis of the NuMI accelerator neutrino beam, and comprised a pair of kiloton-scale steel-scintillator detectors, located 1km and 735km downstream of the beam target. MINOS accumulated in excess of 15e20 protons-on-target (POT) using a low-energy beam; MINOS+ subsequently collected a further 10e20 POT using a medium-energy beam. Both MINOS and MINOS+ have made precise measurements of three-flavour neutrino oscillations, and have also performed searches for new physics beyond the standard model of neutrino oscillations. In particular, both phases of the experiment are sensitive to sterile neutrinos in the region of parameter space favoured by the LSND and MiniBooNE experiments. In this talk, I will present the latest sterile neutrino results from MINOS and MINOS+, which are based on a 3+1 model, and combine both charged-current and neutral-current data in a two-detector analysis of neutrino disappearance. I will also discuss a combined analysis of the MINOS accelerator data with the Daya Bay and Bugey-3 reactor data, which has yielded strong constraints on anomalous muon to electron neutrino appearance. In addition to these results, I will present the latest direct searches by MINOS+ for sterile-driven anomalous appearance of electron neutrinos.

Speaker: Dr ANDREW BLAKE (LANCASTER UNIVERSITY)

Slides NuFact2017_MinosPlus.pdf

WG2: Neutrino scattering physics

Convener: Dr Marco Roda (University of Liverpool)

37 Neutrino cross-section measurement prospects with SBND

SBND (Short-Baseline Near Detector) is a 112 ton liquid argon TPC neutrino detector under construction in the Fermilab Booster Neutrino Beam. Together with MicroBooNE and ICARUS-T600 detectors, SBND will search for short baseline neutrino oscillations in the 1 eV$^2$ mass range. SBND will also perform detailed studies of the physics of neutrino-argon interactions, thanks to a data sample of millions of electron and muon neutrino interactions. Finally SBND plays an important role in the on-going R&D effort to develop the LArTPC technology, testing several technologies that can be used in a future kiloton-scale neutrino detectors for a long-baseline experiment. We will discuss the detector design, its current status, and the physics program, with a particular focus on the neutrino cross-section measurement prospects.

Speaker: Dr Nicola McConkey (University of Sheffield)

Slides SBND_NM_NuFact.pdf

38 Cross Section Prospects for MicroBooNE

Speaker: Mr Marco Del Tutto (University of Oxford)

Slides NUFACT2017-Talk-MicroBooNE-MarcoDelTutto_v0.3.pdf

39 Pion scattering with the LArIAT experiment

This talk presents studies of pion scattering on liquid argon (LAr) with the LArIAT experiment. Pion scattering cross-sections on LAr are an important input to models of neutrino scattering used by current and future LAr neutrino experiments, such as MicroBooNE, SBND, and DUNE. LArIAT is a small LAr time projection chamber (LArTPC) in an instrumented test beam at Fermilab. The precise calorimetry and tracking of LArTPC technology enable reconstruction of an interacting pion's energy as well as identification of secondary particles produced in the interaction. This enables the measurement of the total pion-argon cross-section and exclusive interaction channels such as pion absorption, charge exchange, and scattering.

Speaker: Dr Justin Hugon (Louisiana State University)

Slides LArIAT_NUFACT2017_hugon_v2.pdf

WG3: Accelerator physics: Target and Beam Window

Convener: Prof. Tetsuro Sekiguchi (KEK)

40 Target and beam window challenges and limits

Speaker: Tristan Davenne (RAL)

Slides targetlimits.pdf

41 RaDIATE Collaboration and Proton Irradiation Campaign at BLIP

Speaker: Yongjoon Lee (ESS)

Slides RaDIATE_BLIP_Overview.pptx

42 HiRadMat facility experimental programme

Speaker: Yacine Kadi (CERN)

Slides 170926_NUFACT2017_HRMT_Kadi.pptx

WG4: Muon physics: Muon cLFV

Convener: Dr MyeongJae Lee (Institute for Basic Science, Korea)

43 DeeMe experiment to search for muon to electron conversion at J-PARC MLF

The DeeMe experiment is planned at J-PARC Materials and Life Science Experimental Facility (MLF). The experiment aims to search for the muon to electron conversion in the nuclear field, which is one of the charged lepton flavor violation (cLFV) processes. While the processes are forbidden in the Standard Model (SM) of particle interactions, some theories beyond the SM predict the existence of cLFVs at observable branching ratios. Therefore, the experimental signature would be a clear evidence of new physics. Our goal is to measure the process with a single event sensitivity of 1 × 10^-13 or 2 × 10^-14 for a graphite or silicon carbide target, which is one or two orders of magnitude better than the current upper limits 7 × 10^-13 for a gold target by the SINDRUM-II experiment at PSI and 4.6 × 10^-12 for a titanium target by the experiment at TRIUMF. In this talk, the current status of the preparation for the DeeMe experiment will be reported.

Speaker: Ms Natsuki TESHIMA (Osaka City University)

Slides nufact2017_deeme_teshima.pdf

44 Higgs mediated CLFV processes $\mu N (eN) \rightarrow \tau X$ via gluon operators

We revisit charged lepton flavor violating (CLFV) scattering processes $\ell_{i} N \to \tau X \, (\ell_{i} \ni e, \mu)$ mediated by Higgs. We point out that a new subprocess $\ell_{i} g \to \tau g$ via the effective interactions of Higgs and gluon gives the dominant contribution to $\ell_{i} N \to \tau X$ for an incident beam energy of $E_{\ell} < 1\,\text{TeV}$ in fixed target experiments. Furthermore, in the light of quark number conservation, we consider quark pair-production processes $\ell_{i} g \to \tau q \bar{q}$ ($q$ denotes quarks) instead of $\ell_{i} q \to \tau q$. This corrects the threshold energy of each subprocess contributing to $\sigma(\ell_{i} N \to \tau X)$. Reevaluation of $\sigma(\ell_{i} N \to \tau X)$ including all of relevant subprocesses shows that the search for $\ell_{i} N \to \tau X$ could serve a complementary opportunity with other relevant processes to shed light on the Higgs CLFV. Reference: arXiv:1705.01059 [hep-ph]

Speaker: Dr Masato Yamanaka (Maskawa Institute)

Slides NuFact_Yamanaka.pdf

45 Construction of new DC muon beamline, MuSIC-RCNP, for muon applied science

A new DC muon beamline, MuSIC (MUon Science Innovative muon beam Channel) was constructed at Research Center for Nuclear Physics (RCNP), Osaka University. The MuSIC is a versatile beamline for various experiments in a fundamental physics and a muon applied science. This beamline provides intense positive and negative muon beams from 28 to 110 MeV/c. It is designed to provide an intense muon beam by a novel method with a pion capture superconducting solenoid magnet and a pion transport magnet. They enables us to collect pion very efficiently with very large acceptance. At present, the beamline is extended with several conventional magnets to an experimental port located at 22 m downstream of the production target to perform experiments. The beamline commissioning was started for investigating and optimizing the muon beam transport, beam parameters and background condition. Some experiments especially with negative muons were performed in parallel to the commissioning. In this presentation, we will report the MuSIC beamline and current status of the muon beamline commissioning and comment for future prospects in the MuSIC beamline.

Speaker: Dr Dai Tomono (Osaka University)

Slides NuFact2017_20170926tomono.pdf

46 New limits on heavy neutrinos from NA62

The NA62 experiment at CERN collected a large sample of charged kaon decays in flight with a minimum bias trigger in 2007, and with an improved setup in 2015-16. Upper limits on the rate of the charged kaon decay into a muon and a heavy neutral lepton (HNL) obtained from 2007 data and limits for electron and heavy neutral lepton obtained with 2015-16 data, are reported for a range of HNL masses.

Speaker: Antonino Sergi (Uni Birmingham)

Slides NUFACT2017-Sergi.pdf

Lunch break

WG1+WG2: joint session

Convener: Kevin McFarland

47 MINERVA cross section

Speaker: Bravar Sandro (University of Geneva)

Slides NuFACT_Bravar.pdf

48 The T2K cross-section results and prospects from the oscillation perspective

Speaker: Keigo Nakamura (Kyoto University)

Slides NuFACT_v4.pdf

49 MicroBooNE cross section

Speaker: Xiao Luo (Yale)

Slides NuFact2017_xiaoluo.pdf

50 NOvA cross section

Speaker: Kirk Bays (California Institute of Technology)

Slides nufact_2017_bays.pdf

WG3: Accelerator physics: Neutrino Factories

Convener: Alex Bogacz

51 ENUBET: high precision neutrino flux measurements in conventional neutrino beams

The precision era of neutrino physics requires measurements of absolute neutrino cross sections at the GeV scale with exquisite (1%) precision. These measurements are presently limited by the uncertainties on neutrino flux: the goal of the ERC ENUBET Project is to demonstrate that such uncertainties can be removed employing novel monitoring techniques of the leptons at the neutrino source. In particular, a reduction of these systematics by one order of magnitude can be achieved monitoring the positron production in the decay tunnel originating from the K_e3 decays of charged kaons in a sign and momentum selected narrow band beam. In this talk we present the results obtained during the first year of the Project on beamline simulation, rate and dose assessment, detector prototyping and evaluation of the physics reach. In particular, we present the Reference Design issued by the Collaboration in spring 2017, discussing its achievements and the remaining technical challenges.

Speaker: Fabio Pupilli (INFN, Padova)

Slides Pupilli_ENUBET_NUFACT2017.pdf

52 EMuS in CSNS

MuSR is a useful tool which use muons as magnetic probes in matter. There are several MuSR running around world. Now a R&D program named EMuS had been approved to setup a new MuSR in China. The EMuS will be located in CSNS, Dongguan. Use 4KW/20KW 1.6GeV proton beam from CSNS hit target to generate surface muons and pions, then secondary particels will be collected and transfered. Besides polarized muons used as MuSR, neutrinos decayed from pions and muons are planned to be used to do various experiments. Unlike those previous MuSR, EMuS adopted adiabatic particle capture system concept from Neutrino Factory and COMET, so a higher intensity muon beam is expected to be achieved. This would make EMuS a place with good competitiveness for material analysis and neutrino physics. Recent progress on design of the proton beamline, target station, MuSR beamline, neutrino muon beamline and MuSR will be reported.

Speaker: Guang Zhao (IHEP)

Slides nufact17_guang.pdf

53 Accelerator R&D Toward Proton Drivers for Future Particle Accelerators

Speaker: Dr Ben Freemire (Northern Illinois University)

Slides AcceleratorRDFutureAccelerators_NuFact17_Freemire.pdf

WG4: Muon physics: Lepton cLFV and hadron cLFV

Convener: Dr MyeongJae Lee (Institute for Basic Science, Korea)

54 Search for lepton favour violation with the ATLAS detector

Lepton flavor violation (LVF) is a striking signature of potential beyond the Standard Model physics. The search for LFV with the ATLAS detector is reported in searches focusing on the decay of the Higgs boson, the Z boson and of a heavy neutral gauge boson, Z', using pp collisions data with a center of mass energy of 8 TeV and 13 TeV.

Speaker: Geert Jan Besjes

Slides 170926.ATLAS.cLFV.nuFact.gbesjes.pdf

55 Search for heavy neutrinos and charged lepton flavour violation processes at CMS

In the standard model (SM), charged lepton flavour violation (LFV) induced by neutrino oscillations is extremely suppressed. However extensions of the SM may enhance LFV processes to levels observable at the LHC. The talk will present the latest results on searches for heavy neutrinos and charged LFV processes performed by the CMS experiment at the CERN LHC collider. The searches are based on the analyses of proton-proton collision data collected in 2015 and 2016 at 13 TeV and corresponding to an integrated luminosity up to 36/fb. First, an update of the search for LFV decays of the H boson to mu-tau and e-tau finale states will be presented, based on the full 2016 dataset. These analyses superseed the ones performed on the 8 TeV data (collected in 2012) where a 2.4 sigma excess was observed in the H to muon-tau decay channel. A search for heavy resonances decaying to an electron and a muon in the final state will be detailed. Finally, results of the searches for a heavy neutrino in various final state topologies will be summarized.

Speaker: Prof. Barbara Clerbaux (ULB)

Slides CMS_NuFact_Clerbaux.pdf

56 Lepton flavour universality tests at LHCb

In the Standard Model, the three charged leptons are identical copies of each other, apart from mass differences. Experimental tests of this feature in decays of b hadrons are highly sensitive to New Physics particles which preferentially couple to the 2nd and 3rd generations of leptons. This talk will review the latest lepton universality tests at LHCb in both charged-current and neutral-current semileptonic decays.

Speaker: Preema Rennee Pais

Slides Pais_LHCbLeptonPhysics_NuFact.pdf

WG5: Neutrinos beyond PMNS: Non-Standard Interactions in oscillation experiment

Convener: André de Gouvea

57 Study of non-standard charged-current interactions at the MOMENT experiment

Speaker: Prof. JIAN TANG (Sun Yat-Sen University)

Slides CC-NSI_at_MOMENT20170926.pdf

58 The sensitivity of the T2HKK experiment to the flavor-depednent non-standard interactions

Speaker: Osamu Yasuda (Tokyo Metropolitan University)

Slides nufact2017-v04.pdf

59 Non-Standard Interactions with High-energy Atmospheric Neutrinos at IceCube

Speaker: Nuria Rius (Instituto de Fisica Corpuscular, Valencia)

Slides NF_rius.pdf

Poster session: Posters and Coffee

Plenary session

Convener: Prof. Alan Bross (Fermilab)

60 Results and prospects of Reactor Neutrinos

Speaker: Dr Zeyuan Yu (Institute of High Energy Physics, China)

Slides Reactor_neutrino_Zeyuan.pdf

61 Global Neutrino Oscillation Fits

Speaker: Antonio Palazzo (INFN Bari)

Slides Nufact_palazzo.pdf

Wednesday, 27 September

Plenary session

Convener: Joakim Cederkäll

62 Proton interactions and Neutrino Flux Determination

Speaker: Alexander Radovic (College of William & Mary)

Slides radovicBeamsNUFACT2017.pdf

63 Neutrino Interactions and Cross-Sections

Speaker: Kevin McFarland (University of Rochester)

Slides NuFact17_McFarland_Interactions.pdf

64 Neutrino-Nucleus Scattering Theory

Speaker: Luis Alvarez Ruso (IFIC Valencia)

Slides LAR_v7.pdf

Coffee break

Plenary session

Convener: Joakim Cederkäll

65 Systematic Uncertainties in Neutrino Oscillation Measurements

Speaker: Dr David Hadley (University of Warwick)

Slides talk-drh-nufact-systematic.pdf

WG1: Neutrino oscillation physics: LBN current and Future

Convener: Francesca Di Lodovico (Queen Mary University of London)

66 Details of the NOvA oscillation analyses and systematic uncertainties

Speaker: Dr Linda Cremonesi (University College London)

Slides LCremonesi_NOvAnumu_NuFact2017_v2.pdf

67 Oscillation results and plans from the T2K experiment

Speaker: Patrick Dunne (Imperial College London)

Slides NUFACT2017Presentation.pdf NUFACT2017Presentation.pptx

WG2: Neutrino scattering physics

Convener: Prof. Maria Benedetta Barbaro (University of Turin and INFN)

68 GENIE models and global fits of neutrino scattering data

Neutrino Monte Carlo generators are the single interface between theory and experiment and, as such, they are an essential ingredient in any attempt to connect neutrino data with the answers to fundamental physics questions. GENIE is the world's most widely-used neutrino Monte Carlo generator. Indeed, its physics model is employed by nearly all current and near future experiments. A key ingredient of the current effort to overhaul the GENIE phenomenological descriptions of neutrino scattering is to develop the capability to perform a global physics tuning using both the increasing body of neutrino scattering data and the vast complementary array of electron-nucleus and hadron-nucleus scattering data. GENIE already contains extensive curated data archives and, quite uniquely, it can simulate the nuclear scattering of neutrinos, electrons and hadronic probes in the exact same physics framework. The vast set of GENIE comparisons to published data, along with GENIE machinery that allows the efficient incorporation of physics uncertainties in the GENIE predictions, will underlie the global tuning effort. A new collaboration with the Professor system authors used for Monte Carlo generator tuning for the Large Hadron Collider (LHC) experiments, provides the main algorithmic procedure for obtaining new physics tunes. In this talk we will outline the development of GENIE models for the simulation of CC $0\pi$ events (a crucial event topology both for oscillation measurements and for probing nuclear dynamics) and present results of the first GENIE global fits of CC $0\pi$ data.

Speaker: Dr Marco Roda (University of Liverpool)

Slides pres.pdf

69 Electromagnetic and neutral-current responses from Quantum Monte Carlo

Understanding the structure and the electroweak interactions of atomic nuclei in terms of their individual constituents is an intriguing nuclear many-body problem. In addition, precise measurements of neutrino oscillations require a quantitative understanding of neutrino-nucleus interactions. I will show how quantum Monte Carlo allows to consistently describe the structure of atomic nuclei and their interaction with electroweak probes, providing a reliable estimate of the theoretical uncertainty of the calculation. I will focus on the electromagnetic and neutral-current response functions of $^{12}$C, discussing the effect of two-body currents and the role of relativistic effects in correlated nuclear systems.

Speaker: Dr Alessandro Lovato (INFN & Argonne National Laboratory)

Slides lovato_em_nc_qmc.pdf

WG3: Accelerator physics: Future Machines

Convener: Prof. Jingyu Tang (Institute of High Energy Physics, CAS)

70 Update on MOMENT target station studies

The muon decay medium-baseline facility (MOMENT) is a high intensity neutrino beam proposed in China, aiming to measure leptonic CP violation. The primary proton beam has 15 MW of power provided from an ADS type of linac, which poses a radiation challenge to a capture system that consists of an adiabatic superconductive solenoid from 14 T to 3 T, and a high power liquid or fluidized target located inside the main capture coil in order to maximize the pions capture and reduce their transverse momentum. Though the initial baseline is the liquid Hg-jet, a novel fluidized waterfall-like granular target is also being studied. In this paper, we present updated studies for the waterfall granular target concerning simulations done with Discrete Element Method and particle physics Monte Carlo analyses. Our aim is to calculate the optimal physical parameters of the waterfall in order to comply with the physics (captured meson yields) requirements of MOMENT, to remove the heat efficiently, and finally to compare the radiation damage caused on the shields of the solenoid with the case of liquid Hg-jet that is severe.

Speaker: Dr Nikolaos Vassilopoulos (IHEP, CAS)

Slides moment-nikos-nufact17.pptx

71 Towards nuSTORM facility - overview of accelerator designs

The neu¬trino beam originating from muons de¬cay¬ing in a stor¬age ring is an ideal tool for pre-cise neu¬trino cross sec¬tion mea¬sure¬ments due to its exactly known flavour con¬tent, including both muon and electron ones, and spec¬trum. The proposed nuS¬TORM fa¬cil¬ity would use pions di¬rectly in¬jected into a race¬track stor¬age ring, where cir¬cu¬lat¬ing muon beam would be formed. The sketch of the nuSTORM facility is discussed. The alternative stor¬age ring designs including a FODO and FFAG (Fixed Field Al¬ter¬nat¬ing Gra¬di¬ent) based ones are presented in details including their estimated physics potentials.

Speaker: Dr Jaroslaw Pasternak (Imperial College London/ISIS-RAL-STFC)

Slides nufact17_nustorm.pdf

WG4: Muon physics: Precision physics

Convener: Dr Angela Papa (PSI)

72 The Muon g-2 Experiment Overview and Status

The Muon g-2 Experiment at Fermilab will measure the anomalous magnetic moment of the muon to a precision of 140 parts per billion, which is a factor of four improvement over the previous E821 measurement at Brookhaven. The experiment will also extend the search for the muons electric dipole moment (EDM) by approximately two orders of magnitude. Both of these measurements are made by combining a precise measurement of the 1.45T storage ring magnetic field with an analysis of the modulation of the decay rate of the higher-energy positrons from the (anti-)muon decays recorded by 24 calorimeters and 3 straw tracking detectors. The current status of the experiment as well as results from the initial beam delivery and engineering run in the summer of 2017 will be described.

Speaker: Dr Jenny Holzbauer (University of Mississippi)

Slides Gm2_nufact_holzbauer.pdf

73 Muon g-2/EDM Experiment at J-PARC

A new measurement of muon g-2/EDM is planned at J-PARC. The most recent measurement performed at BNL shows more than three standard deviations discrepancy with the standard model value. New E34 measurement at J-PARC uses a novel technique of ultra-cold muon beam. Ultra-cold muons are generated from high intensity surface muons by thermal muonium production and laser ionization. After acceleration to 300 MeV in muon linac, the beam is injected and stored in a circulating orbit in an ultra-high precision MRI-type magnet for g-2/EDM measurement. Thus, it is quite complementary to the measurement at BNL and FNAL. The overall design and its preparation status will be reported.

Speaker: Dr Katsuhiko Ishida (RIKEN)

Slides g-2_at_Nufact2017_Ishida.pdf

WG5: Neutrinos beyond PMNS: Sterile neutrinos in long-baseline experiments

Convener: Antonio Palazzo

74 Parameter degeneracy and hierarchy sensitivity of NOvA in presence of sterile neutrino

Speaker: Monojit Gosh (Tokyo Metropolitan University)

Slides talk_nufact.pdf

75 DUNE Sensitivities to the mixing between Sterile and Tau Neutrinos

Speaker: Dr David Vanegas Forero (Instituto de Física Glew Wataghin, UNICAMP)

Slides sterile-nu_DUNE.pdf

Excursion and lunch: Boat trip to the Skokloster castle

Thursday, 28 September

Plenary session

Convener: Jorge Morfin

76 Status of DUNE

DUNE, the Deep Underground Neutrino Experiment, is a next-generation experiment for neutrino science, nucleon decay, and supernova physics. The experiment is enabled by the Long Baseline Neutrino Facility, LBNF. The experiment will consist of a high-intensity neutrino beam from Fermilab (FNAL), a highly capable neutrino near detector at FNAL, and a 40-kton fiducial mass, underground, far detector at the Sanford Underground Research Facility (SURF). The year 2017 marks the beginning of DUNE civil construction at SURF. Physics with the DUNE far detector is expected to start in 2024, while first neutrino beam from FNAL to SURF is expected in 2026. During this talk I will focus on two aspects. First, I will discuss the DUNE projected physics reach, with a focus on long-baseline neutrino oscillation physics. Second, I will describe the DUNE/LBNF project status, with an emphasis on the design of the far and near neutrino detectors and on the related prototyping activities.

Speaker: Michel Sorel (IFIC (CSIC and U. Valencia))

Slides NuFact17_Sorel_light.pdf

77 Status of Hyper-Kamiokande

Hyper-Kamiokande (Hyper-K) is a next-generation, water Cherenkov detector that is proposed to be built in Japan. Hyper-K will consist of two tanks, each with a fiducial volume of 187 kilotons. Hyper-K will address some of the most important questions in the field, including the measurement of neutrino oscillation parameters, as well as probing CP-violation, neutrino mass hierarchy, neutrino astrophysics, and nucleon decay searches. This talk will describe the current status of Hyper-K, including the proposal to place one of the two Hyper-K tanks in Korea, as well as the plan for the accelerator neutrino physics program.

Speaker: Erin O´Sullivan (Stockholm University)

Slides NuFact2017_eosullivan.pdf

78 Status of ESSnuSB

Speaker: Marcos Dracos (IPHC-IN2P3/CNRS Université de Strasbourg)

Slides Dracos_NuFact2017.pptx

Coffee break

Plenary session

Convener: Dr Hélio da Motta (Centro Brasileiro de Pesquisas Físicas)

79 Status of eV-mass Sterile Neutrino Experiments

Speaker: Prof. Marco Pallavicini (Università di Genova and INFN)

Slides NuFact2017-Uppsala-Pallavicini.pdf

80 Status of Heavy Neutrinos Experiments

Speaker: Dr Benjamin Wynne (University of Edinburgh)

Slides HeavyNeutrinoStatus.pdf

81 The COHERENT Experiment

Speaker: Kate Scholberg (Duke University)

Slides nufact17.pdf

Lunch break

WG1: Neutrino oscillation physics: LBN current and Future

Convener: Francesca Di Lodovico (Queen Mary University of London)

82 Hadro-production measurements for neutrino experiments

Speaker: Alain Blondel (University of Geneva)

Slides 1_Blondel_Alain_thursday-401.pdf

83 DUNE Oscillation Physics

Speaker: Nick Grant (University of Warwick)

Slides DUNE_osc_physics.pdf

84 Physics potential of Hyper-Kamiokande for neutrino oscillation measurements

Speaker: Christoph Bronner (ICRR Kamioka)

Slides HK_oscillations.pdf

85 Physics potential of the ESSnuSB

Speaker: Mattias Blennow (Royal Institute of Technology)

Slides blennow-nufact2017-uppsala.pptx

86 Analytic Neutrino Oscillation Probabilities in Matter Revisited

Speaker: Stephen Parke (Fermilab)

Slides parke_nufact.pdf TriangleAmue.gif

WG2: Neutrino scattering physics

Convener: Luis Alvarez-Ruso

87 Neutrino-nucleus interactions at intermediate energies

Present and future generations of accelerator-based neutrino-oscillation experiments use nuclei as targets, therefore, a good understanding of neutrino-nucleus processes is essential to reduce systematic errors in the oscillation analyses. In addition to that, since monoenergetic neutrino beams are not available, the theoretical models have to be able to describe all possible reaction channels in the wide energy region covered by the beam: quasielastic scattering, two-body current contributions, single-pion production, deep inelastic scattering, etc. In recent years, the research activities of the Ghent group have focused on providing a consistent description of some of these mechanisms. We wish to present the current status of our investigations. We describe the low energy region with collective nuclear excitations and the quasielastic peak using a Hartree-Fock-CRPA (continuum random phase approximation) model that takes into account nuclear long-range correlations as well as hadronic final-state interactions. The two-body current mechanisms, which are especially important in the region between the quasielastic and the delta-resonance peak, are treated within the same mean-field based model. We consider the influence of nuclear short-range correlations on one- and two-nucleon knockout channels. Our description of intermediate-energy neutrino-nucleus scattering is completed by modeling neutrino-induced single-pion production. For that, we consider resonance decays as well as other contributions required by chiral symmetry. This low-energy model is combined with a Regge approach, that allows us to extend our predictions beyond the resonance region.

Speaker: Dr Raúl González-Jiménez (Ghent University)

Slides modeling-neutrino-nucleus-interaction.pdf

88 Meson-exchange currents and quasielastic predictions for neutrino-nucleus scattering

We summarize our recent progress in the description of charged-current neutrino-nucleus interaction in the GeV region within the SuSAv2-MEC approach, a fully relativistic model based on the analysis of electron-nucleus scattering data and recently improved with the inclusion of Relativistic Mean Field theory effects. In particular, we discuss the weak excitation of two-particle-two-hole (2p2h) states induced by meson exchange currents and illustrate the role of relativistic effects, quantify the size of the direct-exchange interferences, and the relative importance of the axial versus vector current. The model is validated versus all available electron-carbon scattering data and its predictions are compared with neutrino scattering data from MiniBooNE, MINERvA, T2K and NOMAD. The results of a recent study on the density dependence of the 2p2h response are also presented and discussed. References: Relativistic model of 2p-2h meson exchange currents in (anti)neutrino scattering I. Ruiz Simo, J.E. Amaro, M.B. Barbaro, A. De Pace, J.A. Caballero, T.W. Donnelly, J.Phys. G44 (2017) no.6, 065105. The frozen nucleon approximation in two-particle two-hole response functions I. Ruiz Simo, J.E. Amaro, M.B. Barbaro, J.A. Caballero, G.D. Megias, T.W. Donnelly, Phys.Lett. B770 (2017) 193-199. Density dependence of 2p-2h meson-exchange currents J.E. Amaro, M.B. Barbaro, J.A. Caballero, A. De Pace, T.W. Donnelly, G.D. Megias, I. Ruiz Simo, Phys. Rev. C (2017) Charged-current neutrino-nucleus reactions within the superscaling meson-exchange current approach G. D. Megias, J. E. Amaro, M. B. Barbaro, J. A. Caballero, T. W. Donnelly, I. Ruiz Simo, Phys.Rev. D94 (2016) no.9, 093004. Emission of neutron–proton and proton–proton pairs in neutrino scattering I. Ruiz Simo, J.E. Amaro, M.B. Barbaro, A. De Pace, J.A. Caballero, G.D. Megias, T.W. Donnelly, Phys.Lett. B762 (2016) 124-130. Emission of neutron-proton and proton-proton pairs in electron scattering induced by meson-exchange currents I. Ruiz Simo, J.E. Amaro, M.B. Barbaro, A. De Pace, J.A. Caballero, G.D. Megias, T.W. Donnelly, Phys.Rev. C94 (2016) no.5, 054610. Inclusive electron scattering within the SuSAv2 meson-exchange current approach G.D. Megias, J.E. Amaro, M.B. Barbaro, J.A. Caballero, T.W. Donnelly, Phys.Rev. D94 (2016) 013012. Charged-current inclusive neutrino cross sections in the SuperScaling model including quasielastic, pion production and meson-exchange contributions M.V. Ivanov, G.D. Megias, R. González-Jiménez, O. Moreno, M.B. Barbaro, J.A. Caballero, T.W. Donnelly, J.Phys. G43 (2016) no.4, 045101.

Speaker: Prof. Maria Benedetta Barbaro (University of Turin and INFN)

Slides BarbaroUppsala2017.pdf

89 Electromagnetic responses and scaling functions

Speaker: Noemi Rocco (Surrey University)

Slides talk_N_Rocco.pdf

90 Semi-phenomenological spectral functions in neutrino-nucleus inclusive reactions

In order to develop a reliable model for neutrino-nucleus interaction, one has to account for various nuclear effects which go beyond Fermi gas picture. In this talk I will present a recent study of neutrino-nucleus inclusive reactions at low and intermediate energies where in medium modifications are introduced in terms of the hole and particle semi-phenomenological spectral functions (SFs). Concentrating on the quasi-elastic mechanism, I will show how SFs are included into the particle-hole propagator (which is the basic notion in our approach). I will also describe the interplay of RPA effects (which are crucial part of the model developed by Valencia group) and SFs. Finally I will present results (and comparisons with other approaches) for both neutrino and antineutrino CC quasi-elastic processes for various targets and energies.

Speaker: Ms Joanna Sobczyk (IFIC)

Slides jsobczyk_nufact2017.pdf

WG3: Accelerator physics: EuroNuNet/COST

Convener: Tord Ekelöf (Uppsala University)

91 Status of the ESS Project

Speaker: Mats Lindroos (ESS)

Slides 1_NUFACT2017_-_Mats_Lindroos.pptx

92 The ESS Linac and Upgrades for the Neutrino Facility

Speaker: Mohammad Eshraqi (ESS)

Slides ESSnuSB_at_NuFACT.pdf

93 The ESSnuSB Accumulator

The 2.0 GeV, 5 MW proton linac for the European Spallation Source, ESS, would have the capacity to send extra pulses to a neutrino target, giving an excellent opportunity to produce a high performance neutrino beam, the ESS neutrino Super Beam (ESSnuSB). The neutrino target focusing system needs pulses shorter than a few micro-seconds. These short pulses will be formed in an accumulation ring, handling 2.86 ms long linac pulses with 1.1E15 protons in each pulse. One of the main challenges of this accumulator ring is the injection of the particles. H- stripping and painting is the method worked on presently. Some other ideas like lossless, multi-turn and multi-plane injection of protons could will also be investigated. The evolution of the beam distribution is studied during accumulation in order to make sure the beam characteristics meet the requirements from the extraction region, the transfer line and the target system. Simulation results and plans for future work on the accumulator design in view of the ESSnuSB design report will be discussed.

Speaker: Dr elena wildner (cern)

Slides NUFACT17,_Accumulator_3.pptx

94 The ESSnuSB Switchyard, Target Station, and Facility Performance

Speaker: Eric Baussan (IPHC, Université de Strasbourg, CNRS/IN2P3)

Slides NUFACT2017_EUROnuSB_TargetStation.pdf

WG4: Muon physics: Lepton and hadron cLFV - Muonium

Convener: Craig Group (University of Virginia)

95 Prospects of LFV studies at Belle II

The Belle II experiment at the SuperKEKB collider is a major upgrade of the KEK ``B factory'' facility in Tsukuba, Japan. The machine is designed for an instantaneous luminosity of 8x10^35 cm^-2s^-1, and the experiment is expected to accumulate a data sample of about 50 ab^-1 in five years of running. With this amount of data, decays sensitive to physics beyond the Standard Model and cLFV can be studied with unprecedented precision. One promising set of modes are physics processes containing neutrinos which are characterized by missing energy. Topics which will be discussed are: Lepton number violation in τ decays, Violation of lepton universality in b➝c(τ/l)ν, Violation of lepton universality in b➝sll

Speaker: Dr Dmitri LIVENTSEV (Virginia Polytechnic Institute and State University)

Slides 1709-uppsala.pdf

96 Searches for charged Lepton Flavor Violation at BESIII

Speaker: Mr Xiaoshen Kang (Nankai University)

Slides NiFact2017_BES3_v9.pdf

97 Precision measurement of muonium hyperfine structure at J-PARC

Muonium is the bound state of a positive muon and an electron. Muonium is free from the finite-size effect of nucleons, thus the theoretical value of muonium hyperfine splitting (MuHFS) can be detemined precisely. MuSEUM (Muonium Spectroscopy Experiment Using Microwave) aims ten-fold improvement of the preceding measurement of the experimental value of MuHFS in the ground state both in zero magnetic field and in high magnetic field. This can be achieved by using the most intense pulsed muon beam supplied at J-PARC MLF MUSE. 　The procedure of this measurement is as follows : 　　1. Spin polarized muons are injected to a RF cavity filled with Kr gas, which is covered with magnetic shields or a superconducting magnet. 　　2. Muonium is formed via electron capture in Kr gas and its HFS transition is induced by RF field. 　　3. Spectroscopy of MuHFS is performed by the measurement of angular asymmetry of decay positron from muon decay. 　In this presentation, I report the result of the MuHFS mesurement in zero magnetic field and future prospect.

Speaker: Mr Shun Seo (The University of Tokyo)

Slides 20170928Nufact_Seo.pdf

98 Development of the magnetic field mapping method for the precise spectroscopy of the muonium hyperfine splitting with 1.7 T magnetic field

Muonium is a hydrogen-like atom formed by a positive muon and an electron. The measurement of muonium hyperfine structure (MuHFS) at ground state is a good probe to test the theory of the bound state quantum electrodynamics (QED). Moreover, from the MuHFS measurement with high magnetic field, the muon-to-proton magnetic moment ratio and mass ratio are also derived. As the muon-to-proton magnetic moment ratio is an important input parameter for the muon anomalous magnetic moment ($g − 2$), the precision of the MuHFS measurement is also important for the ($g− 2$) measurement, which is known for about $3$ standard deviation ($3\sigma$) discrepancy between the standard model prediction and the experimental value [1] [2]. The current value of MuHFS was measured in $1.7$ T magnetic field with a precision of 120 ppb and μμ/μp, mμ/mp were in $12$ ppb [3]. However, the biggest uncertainty in the previous measurement was caused by the statistics and the second was systematical uncertainty caused by the magnetic field inhomogeneity. MuSEUM (Muonium Spectroscopy Experiment Using Microwave) collaboration is planning to improve this precision by a factor of 10 by using the intense pulsed muon beam at J-PARC MLF and suppressing the magnetic field inhomogeneity. To suppress the systematic uncertainty caused by the magnetic field inhomogeneity, we are developing the magnetic field mapping method to scan the magnetic field in the muonium production region with a high precision. [1] K. Hagiwara et al., Journal of Physics G, 38 (2011). [2] G.W. Bennett et al., Phys. Rev.D73 072003 (2006). [3] W. Liu et al., Physical Review Letter 82 4 (1999).

Speaker: Toya Tanaka (University of Tokyo)

Slides 20170928_nufact_toyatanaka.pdf

99 Precision laser spectroscopy of the ground state hyperfine splitting in muonic hydrogen

The proton is a fundamental constituent of the world. However, its internal structure has not been fully understood because of the complicity and difficulties in both theory and experiment. In 2010, a significant discrepancy between two independent measurements of the proton charge radius was reported. This conflict is known as "proton radius puzzle". Even though various interpretations have been proposed, no definitive solution to the problem has been found. One of the most straightforward and effective approaches to this puzzle is an investigation of the magnetic moment distribution in addition to the charge distribution. In the muonic hydrogen hyperfine splitting (HFS), there is a contribution from a finite volume effect of the proton. This contribution is described by the Zemach radius, which is defined as a convolution of the charge distribution with the magnetic moment distribution. In order to shed some light on the puzzle, we proposed a first direct measurement of the muonic hydrogen ground-state HFS for a determination of the proton Zemach radius in the highest precision. The goal of the experiment is a measurement of the muonic hydrogen HFS with 1 ppm of relative uncertainty and a determination of the proton Zemach radius with 1% of precision. We utilize a high-intensity pulsed muon beam, an intense mid-infrared laser, a nuclear spin polarized hydrogen target, and a segmented electron detector. In this presentation, an experimental overview and development progress in each sub-system are discussed.

Speaker: Dr Sohtaro Kanda (RIKEN)

Slides Mup_NuFact_20170925.pdf

WG5: Neutrinos beyond PMNS: Dark matter searches at neutrino experiments

Convener: Prof. Stefan Antusch (University of Basel)

100 Dark Matter Search in the Miniboone Proton Beam Dump experiment

Speaker: Prof. Robert Cooper (New Mexico State University)

Slides rlc_NuFact_2017-09-28.pdf

101 Mini-review on boosted Dark Matter signatures at neutrino experiments

Speaker: Yue Zhao (University of Michigan)

Slides BDM-review.ppt

102 Indirect searches of Galactic diffuse dark matter in INO-MagICAL detector

Speaker: Prof. Sanjib Kumar Agarwalla (Institute of Physics, Bhubaneswar)

Slides Sanjib-DM-2017.pdf

103 Neutrino Lines from Majoron Dark Matter

Speaker: Julian Heeck (Université Libre de Bruxelles)

Slides heeck_neutrino_lines_nufact2017.pdf

Coffee break

Plenary session

Convener: Vittorio Palladino

104 Synergies and Complementarities between Proposed Future Neutrino Projects

Speaker: Dr Sushant Raut (IBS CTPU)

Slides SushantRaut_nufact2017_synergy.pdf

105 Sterile neutrino searches at future colliders

Sterile neutrinos are attractive extensions of the Standard Model of particle physics to generate the light neutrino masses observed in neutrino oscillation experiments. When the sterile neutrinos are subject to a protective symmetry, they can have masses around the electroweak scale and potentially large neutrino Yukawa couplings, which makes them testable at possible future particle colliders. We discuss the production and decay channels at electron-positron, proton-proton and electron-proton colliders and highlight promising signatures for sterile neutrino searches.

Speaker: Prof. Stefan Antusch (University of Basel)

Slides 2017_NUFACT_Antusch.pdf

106 Future Neutrino Facilities and Synergies with Other Experimental Projects

Speaker: Prof. Jingyu Tang (Institute of High Energy Physics, CAS)

Slides Future_neutrino_facilities_synergy-Tang.pdf

SPC meeting

Friday, 29 September

Plenary session

Convener: Tommy Ohlsson

107 Cosmic Neutrinos

Speaker: Prof. Ofelia Pisanti (Università di Napoli Federico II)

Slides Cosmic_nu.pdf

108 Recent experimental advances on neutrinos as dark matter

Speaker: Alexey Boyarsky (Leiden University)

Slides NuFact.pdf

109 Beyond Standard Neutrino Theory

Speaker: Dr Toshihiko Ota (Yachay Tech)

Slides NuFACT2017-Uppsala-Ota.pdf

Coffee break

WG1+WG2: joint session

Convener: Francesca Di Lodovico (Queen Mary University of London)

110 Upgrade of the T2K near detector ND280: effect on oscillation and cross-section analyses

Speaker: Mr Mathieu Lamoureux (CEA Saclay, IRFU)

Slides 17-09-29_NUFACT_upgrade_T2K_ND280.pdf

111 Reducing neutrino interaction uncertainties in oscillation measurements with the E61 experiment

Speaker: Cristovao Vilela (Stony Brook)

Slides cvilela_NuFact2017_JPARC_E61.pdf

112 DUNE Near Detector with focus on cross section and prospects from the oscillation perspective

Speaker: Dr Hongyue Duyang (University of South Carolina)

Slides duyang_dune_nd_nufact2017_wide.pdf

WG3: Accelerator physics: MICE

Convener: Dr Ben Freemire (Northern Illinois University)

113 The MICE Experiment: Status and Prospects

Speaker: Dr Jaroslaw Pasternak (Imperial College London/ISIS-RAL-STFC)

Slides MICE-Introduction_nufact2017.pdf

114 Recent Results from MICE on Multiple Coulomb Scattering and Energy Loss

Speaker: John Nugent (University of Glasgow)

Slides JNNuFact17.pdf

115 Recent Results from the Study of Emittance Evolution in MICE

Speaker: Christopher Hunt (Imperial College London)

Slides NUFACT17_MICE_Emittance_Evolution_Hunt.pdf

116 Measurement of Phase Space Density Evolution in MICE

Speaker: François Drielsma (University of Geneva)

Slides phase_space_evolution_nufact2017_drielsma.pdf

WG4: Muon physics: Muon theoretical session

Convener: Dr Angela Papa (PSI)

117 Overview of Lepton Flavor Violation

Speaker: Paride Paradisi (INFN Padova)

118 SMEFT and charged lepton flavour violation

This talk reviews recent theoretical developments in the study of charged lepton flavour violation. It describes the recent progress in the effective field theory interpretation of charged lepton-flavour violating observables in connection with different energy scales by exploiting the SMEFT framework. A systematic approach is briefly presented and applications on muonic and tauonic observables are reported.

Speaker: Giovanni Marco Pruna

Slides G_M_Pruna.pdf

119 Fully differential NLO predictions for rare and radiative lepton decays

We present a general purpose Monte Carlo program for the calculation of the radiative ($\mu\to\nu\bar\nu e+\gamma$) and rare ($\mu\to\nu\bar\nu e+e^+e^-$) muon decays at NLO in the effective Fermi theory. These processes are irreducible Standard Model backgrounds to searches for lepton flavour violation at the PSI experiments MEG and Mu3e as they become indistinguishable from the corresponding signals when the neutrinos carry little energy. Furthermore, we argue that fully differential NLO corrections are very important for the analysis of measurements aiming at the percent level or better. This is especally true of very stringent phase-space cuts are applied. To illustrate this, we use a recent tension between BaBar's recent measurement of the radiative tau decay and the Standard Model prediction as an example of such an analysis.

Speaker: Mr Yannick Ulrich (Paul Scherrer Institut / Universität Zürich)

Slides talk.pdf

120 A proposal of a New Charged Lepton Flavor Violation Experiment: μ− e− → e− e− in muonic atom

We propose a new process of μ− e− → e− e− in a muonic atom for a quest of charged lepton flavor violation. The Coulomb attraction from the nucleus in a heavy muonic atom leads to significant enhancement in its rate, compared to μ+ e− → e+ e−. The search for this process could serve complementarily with the other relevant processes to shed light upon the nature of charged lepton flavor violation. The wave functions of bound and scattering state leptons are properly treated by solving Dirac equations with Coulomb interaction of the finite nuclear charge distributions. This new effect contributes significantly in particular for heavier atoms, where the obtained decay rate is about one order of magnitude larger than the previous estimation for 208 Pb in particular for contact interactions. We also discuss how to observe the differences among interaction types. It is based on the works arXiv:1003.1578(PRL 105(2010) 121601), arXiv:1603.01522 (PRD93 (2016) no.7, 076006) and work in progress.

Speaker: Joe Sato (Saitama University)

Slides Nufact2017Sato.pdf

WG5: Neutrinos beyond PMNS: Neutrinos and collider physics

Convener: Dr Walter Marcello Bonivento (INFN Cagliari)

121 Prospects of the SHiP and NA62 experiments at CERN for hidden sector searches

Speaker: Philippe Mermod (University of Geneva)

Slides Mermod_NUFACT17.pdf

122 A connection between neutrino mass and the recent B physics anomalies

Speaker: Michael Schmidt (The University of Sydney)

Slides nufact-MichaelSchmidt.pdf

123 Connections between low-energy CP violation, lepton number violating collider signals and genesis mechanisms

Speaker: Claudia Hagedorn (CP3-Origins, University of Southern Denmark)

Slides hagedorn_nufact2017.pdf

Lunch break

WG1: Neutrino oscillation physics: ATM

Convener: Prof. Jianming Bian (UC Irvine)

124 Recent Results from Super-Kamiokande

The latest results of Super Kamiokande's atmospheric neutrino analyses are presented. The first part focuses on the three-flavor neutrino oscillation analysis with and without external constraints, optimized for sensitivity to the neutrino mass hierarchy, including data from all four run periods of the experiment. Confidence intervals for the oscillation parameters deltaM_23^2, sin^2_23, sin^2_13 and dCP are given for both normal and inverted hierarchy hypotheses. The combined result shows a slight preference for normal hierarchy. The second part presents the most recent results of the neutrino tau appearance analysis. The no-tau appearance hypothesis is excluded at 4.6sigma level, and the inclusive charged-current nu_tau cross-section is measured to be (0.94 ± 0.20) * 10^-38 cm^2

Speaker: Dr Flor de Maria Blaszczyk (Boston University)

Slides NuFact2017_SK_AtmNu.pdf

125 IceCube/DeepCore Results and PINGU

Speaker: Mr Thomas Ehrhardt (Mainz University)

Slides IceCube_DeepCore_PINGU_NuFact_2017_Ehrhardt.pdf

126 Tau Neutrino Appearance in IceCube

The DeepCore low energy extension of the IceCube Neutrino Observatory allows us to study atmospheric neutrino oscillations. With the ability to distinguish between track- and shower-like events, we can statistically look for the disappearance of muon neutrions and simultaneously the appearance of tau neutrinos. This talk will present IceCube's analysis of the tau neutrino appearance rate using roughly three years of livetime. Such a measurement adds to the precision of existing tau neutrino appearance measurements by Super-K and OPERA, deepening our understanding of the tau sector of the PMNS matrix.

Speaker: PHILIPP DAVID ELLER

Slides nufact2017.pdf

127 Measuring the Neutrino Mass Ordering and other oscillation parameters with KM3NeT-ORCA

ORCA (Oscillations Research with Cosmics in the Abyss) is the low-energy branch of KM3NeT, the next generation underwater Cherenkov neutrino detector in the Mediterranean. Its primary goal is to resolve the long-standing unsolved question of whether the neutrino mass ordering is normal or inverted by measuring matter oscillation effects with atmospheric neutrinos. The ORCA design foresees a dense configuration of KM3NeT detection units, optimised for studying the interactions of neutrinos in seawater at low (< 100 GeV) energies. To be deployed at the French KM3NeT site, at 2500 m depth ~40 km offshore Toulon, ORCA's multi-PMT optical modules will exploit the excellent optical properties of deep seawater to accurately reconstruct both cascade (mostly electron neutrinos) and track events (mostly muon neutrinos) with a few GeV of energy. The construction of the first detection units is proceeding. In this contribution we will report on the construction plan and will discuss the potentiality of the ORCA detector both in neutrino mass hierarchy studies and in obtaining new constraints on other key oscillation parameters.

Speaker: Dr Marco Circella (INFN Bari)

Slides km3net_orca_nufact2017.pdf

WG2: Neutrino scattering physics

Convener: Keigo Nakamura

128 Charged-current quasi-elastic scattering at MINERvA

Charged-current quasi-elastic scattering is a particularly interesting interaction to understand. Not only is it a key signal process for oscillation experiments, but its relatively clean signature makes it an ideal channel to study multi-nucleon effects in the target nucleus. Over the past few years, Fermilab's MINERvA experiment has produced several studies of quasi-elastic scattering using the low-energy NuMI beam, which peaks in the 3GeV region. I will present a selection of results for both neutrino and antineutrino scattering on scintillator, including the world's first double-differential cross sections in this energy range, explaining what these can tell us about nuclear effects. In addition I will show a new result which demonstrates how the quasi-elastic cross section changes when scattering from different nuclei.

Speaker: Dr Cheryl Patrick (UCL)

Slides NuFact17CpatrickNew.pdf

129 Measurement of gamma-rays from neutron-oxygen reaction for neutrino-nucleus interaction

Precise knowledge of the neutrino neutral current quasielastic interaction cross section is important for several physics searches at Super-Kamiokande. For example, it is necessary to understand the background accurately in searches for supernova relic neutrinos and dark matter. At the T2K experiment the cross section has been measured but systematic errors are large. This is because neutrino interactions often produce nucleons whose subsequent gamma-ray production on oxygen is currently not well understood. Super-K and T2K must rely on models based on little data. In order to improve these models, measurements of gamma-ray production with a quasi-mono energetic neutron beam and water target have started at Osaka University’s Research Center for Nuclear Physics. Gamma-ray measurements were made with a germanium detector and a LaBr3(Ce) scintillator. In addition, the neutron flux was measured in order to estimate the gamma-ray production cross section. So far three experiments have been carried out with 80 MeV and 392 MeV (kinetic energy) neutrons, and 6.13 MeV gamma-rays were observed that are not currently modeled well in Super-K simulations. In this talk, these measurements and gamma-ray production cross section results will be presented.

Speaker: Mr Yosuke Ashida (Kyoto University)

Slides NUFACT2017_NCgamma_YAshida_v3.pdf

130 Baby MIND: A magnetised spectrometer for the WAGASCI experiment

Sven-Patrik Hallsjö for the CERN NP05 Baby MIND collaboration (CERN, Geneva, Glasgow, INR Moscow, Sofia, Valencia) Abstract content The WAGASCI experiment being built at the J-PARC neutrino beam line will measure the difference in cross sections from neutrinos interacting with a water and scintillator targets, in order to constrain neutrino cross sections, essential for the T2K neutrino oscillation measurements. A prototype Magnetised Iron Neutrino Detector (MIND), called Baby MIND, has been constructed at CERN and will act as a magnetic spectrometer behind the main WAGASCI target. Baby MIND will be installed inside the WAGASCI cavern at J-PARC in the Autumn of 2017. Baby MIND will be able to measure the charge and momentum of the outgoing muon from neutrino charged current interactions, to enable full neutrino event reconstruction in WAGASCI. During the summer of 2017 Baby MIND was operated and characterised at the T9 test beam at CERN. Results from this test beam will be presented, including charge identification performance and momentum resolution for charged tracks. These results will be compared to the Monte Carlo simulations. Finally, simulations of charge-current quasi-elastic (CCQE) neutrino interactions in an active scintillator neutrino target, followed by the Baby MIND spectrometer, will be shown to demonstrate the capability of this detector set-up to perform cross-section measurements under different assumptions.

Speaker: Mr Sven-Patrik Hallsjö (University of Glasgow)

Slides HallsjoMIND.pdf

131 Neutrino-nucleus scattering at nuSTORM

The nuSTORM facility will provide $\nu_e$ and $\nu_\mu$ beams from the decay of low energy muons confined within a storage ring. The instrumentation of the ring, combined with the excellent knowledge of muon decay, will make it possible to determine the neutrino flux at the \%-level or better. The neutrino and anti-neutrino event rates are such that the nuSTORM facility serving a suite of near detectors will be able to measure \nu_eN and \nu_\muN cross sections with the %-level precision required to allow the next generation of long-baseline neutrino-oscillation experiments to fulfil their potential. By delivering precise cross section measurements with a pure weak probe nuSTORM may have the potential to make measurements important to understanding the physics of nucleii. The precise knowledge of the initial neutrino flux also makes it possible to deliver uniquely sensitive sterile-neutrino searches. The concept for the nuSTORM facility will be presented together with an evaluation of its performance. The status of the planned consideration of nuSTORM at CERN in the context of the Physics Beyond Colliders workshop will be summarised. The possibility that nuSTORM could be implemented at the ESS will also be discussed.

Speaker: Prof. Kenneth Long (Imperial College London/STFC)

Slides 2017-09-29-NuFACT-Long.pptx

WG3+WG4: joint session: Muon beam facilities

Convener: Dr Jaroslaw Pasternak (Imperial College London/ISIS-RAL-STFC)

132 The high-intensity muon beam line (HiMB) project at PSI

Muons are an excellent tool for answering both fundamental and applied questions concerning the structure and properties of matter and consequently are in high demand at accelerator facilities. For the materials sciences, muon spin resonance techniques (muSR) are used to probe the magnetic structures of novel materials. In particle physics a number of fundamental measurements rely on the availability of large numbers of muons such as those of the searches for lepton flavour violating decays, the precise measurements of the muon decay properties and studies of muonic atoms. At the Paul Scherrer Institut (PSI) muon rates of up to 4x10^8 mu/s are available, produced by its 1.4 MW proton accelerator complex HIPA. While these are currently the highest muon rates available worldwide, projects in the US and Japan are underway that will be able to surpass these intensities by several orders of magnitude. In order to maintain PSI’s position at the intensity frontier in muon physics and to utilize the unique DC machine structure, a project has started to assess the possibility of creating a next-generation muon beam by modifying the existing Target M station. Initial studies showed that with a slanted slab target design viewed by two, closely placed normal-conducting solenoids as well as a solenoid based channel, surface muon rates of the order of 10^10 mu+/s can be achieved. This contribution will present these studies and the current status of the project.

Speaker: Andreas Knecht (Paul Scherrer Institut)

Slides Andreas_Knecht_-_HiMB.pdf

133 muCool: A novel high-brightness low-energy muon beam

The next generation experiments with muons and muonium atoms require high-intensity muon beams with low energy, small transverse size and small divergence. At the Paul Scherrer Institute, we are developing a novel device that reduces the phase space of a standard $\mu^{+}$ beam by a factor of $10^{10}$ with $10^{-3}$ efficiency. The phase space compression is achieved by stopping $\mu^{+}$ in cryogenic helium gas and applying strong electric and magnetic fields and gas density gradients. This device consists of several consecutive stages, which have been tested separately. The measurements show that we can achieve efficient muon beam compression, as predicted by the simulations. As a next step, we will combine the various stages and extract the compressed muon beam from the gas into vacuum. *This work is supported by SNF grant 200020_172639.*

Speaker: Ms Ivana Belosevic (Institute for Particle Physics, ETH Zurich)

Slides NUFACT_Belosevic.pptx

134 Muon Acceleration: Neutrino Factory and Beyond

Speaker: Alex Bogacz (JLAB)

Slides Muon_Acceleration_NF_Beyond.pptx

135 Low Emittance Muon Beams from Positrons

Speaker: Francesco Collamati (INFN ROMA)

Slides NuFact_Uppsala_Collamati.pdf

WG5: Neutrinos beyond PMNS: New physics searches with coherent neutrino-nucleus scattering

Convener: Kate Scholberg

136 COHERENT constraints on non-standard neutrino interactions

Speaker: Jiajun Liao

Slides NUFACT-2017-liao.pdf

137 COHERENT and the LMA-dark solution

Speaker: Peter Bennert Denton

Slides Denton.pdf

138 Probing light dark sectors with coherent neutrino-nucleus scattering

Speaker: Adam Ritz (University of Victoria)

Slides NUFACT_2017_Final.pdf

Coffee break

Plenary session

Convener: Alain Blondel

139 Synergy and complementarity between neutrino physics and low energy intensity frontiers

Speaker: Ana M. Teixeira (LPC Clermont)

Slides AMT.NUFACT2017.09.29.pdf

140 Pulsed muon beam related physics and experiments on cLFV and g-2/EDM

Speaker: Robert Bernstein (Fermilab)

Slides nufact2017_CLFVBernstein2017.pdf

141 DC muon beam related physics and experiments

Speaker: Toshiyuki Iwamoto (Tokyo University)

Slides nufact_iwamoto.pdf

142 Neutrinos from Decay at Rest

Speaker: Dr Daniel Winklehner (MIT)

Slides NUFACT2017_Winklehner_v2.pdf

Workshop dinner

Saturday, 30 September

Plenary session: Working group summaries

Convener: Roumen Tsenov

143 Working Group 1

Speaker: Francesca Di Lodovico (Queen Mary University of London)

Slides NUFACT_WG1.pdf

144 Working Group 2

Speaker: Dr Marco Martini (ESNT, CEA, IRFU, Université de Paris-Saclay)

Slides martini_nufact_2017_wg2_summary.pdf

145 Working Group 3

Speaker: Prof. Tetsuro Sekiguchi (KEK)

Slides WG3_summary.pdf

Coffee break

Plenary session: Working group summaries

Convener: Tord Ekelöf (Uppsala University)

146 Working Group 4

Speaker: Dr Angela Papa (PSI)

Slides WG4Summary_Papa.pdf

147 Working Group 5

Speaker: Dr Walter Marcello Bonivento (INFN Cagliari)

Slides 2_Summary_WG5.pdf

Closing

Convener: Tord Ekelöf (Uppsala University)

148 Future Outlook

Speaker: Mauro Mezzetto (INFN Padova)

Slides Nufact-Outlook.pdf

149 Invitation to NUFACT2018

Speaker: Prof. Sanjib Kumar Agarwalla (Institute of Physics, Bhubaneswar)

Slides NuFact2018.pdf PANE-2018.pdf

150 Closing remarks

Speaker: Tord Ekelöf (Uppsala University)

Slides NUFACT2017_round-off.pptx