Latest results on Higgs boson searches below m=125 GeV at the LHC

by Susan Gascon-Shotkin (Lyon, IPN)

Friday 27 Oct 2017, 10:00 → 11:00 Europe/Stockholm

Å12167

Abstract: If Nature is indeed described by the Standard Model, then the Higgs boson observed by the ATLAS and CMS experiments in 2012 is the only one. If a more complex model is at work, then there exist multiple Higgs bosons of which the observed one is only the first. Many theories beyond the Standard Model (BSM), such as generalized two-doublet Higgs models and the NMSSM (next-to-minimal-supersymmetric standard model) predict that one of these additional Higgs bosons could be in fact lighter than the one observed. This seminar will review recent searches by the ATLAS and CMS collaborations at the CERN LHC for such a lighter (m<125 GeV) additional scalar or pseudoscalar particle, with a particular focus on the recent CMS results in the diphoton final state from analysis of the 2012 and 2016 datasets.