Recent results on 2HDM charged Higgs boson searches in CMS

The results of two recent CMS physics analyses searching for charged Higgs bosons (H ± ) are presented. They are based on data from proton-proton collisions at the CERN LHC, recorded by the CMS experiment. In the first analysis, a charged Higgs boson with a mass from 90 to 150 GeV decaying to a c quark and a b quark is searched for in electron+jets and muon+jets final states of top quark pair events. The search is performed using data collected by CMS in 2012 at 8 TeV, corresponding to a total integrated luminosity of 19.7 fb − 1 . The signal is extracted by reconstructing the invariant mass of two jets, one of which is identified as a b-jet. No H ± sig- nal is observed and upper limits of 1.1–0.4% are set at 95% confidence level on the branching fraction for t → H ± b for the charged Higgs boson in the mass range of 90–150 GeV, assuming B ( H ± → cb ) = 1. In the second analysis, a charged Higgs boson with a mass from 80 GeV to 3 TeV decaying to a tau lepton and a neutrino is searched for in the fully hadronic final state of top quark pair events. The search is performed using data collected by CMS in 2016 at 13 TeV, corresponding to a total integrated luminosity of 12.9 fb − 1 . Signal is extracted by reconstructing the transverse mass of the hadronically decaying tau lepton and the missing transverse momen- tum. No H ± signal is observed and upper limits of 2.8–0.3% are set at 95% confidence level on B ( t → bH ± ) × B ( H ± → τ ± ν ) for the charged Higgs boson mass range of 80–160 GeV, while upper limits of 1.8–0.004 pb are set at 95% confidence level on σ ( pp → tbH ± ) × B ( H ± → τ ± ν ) for the charged Higgs boson mass ranging from 180 GeV to 3 TeV.