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Compact Muon Solenoid
LHC, CERN

CMS-PAS-HIG-21-010
Search for a charged Higgs boson decaying into a heavy neutral Higgs boson and a W boson in proton-proton collisions at $\sqrt{s}= $ 13 TeV
Abstract: A search for a charged Higgs boson H$^{\pm}$ decaying into a heavy neutral Higgs boson H and a W boson is presented. The analysis targets the H boson decay into a pair of tau leptons with at least one of them decaying hadronically and with an additional electron or muon present in the event. The search is based on proton-proton collision data recorded by the CMS experiment during 2016$-$2018 at $\sqrt{s} = $ 13 TeV, corresponding to an integrated luminosity of 138 fb$^{-1}$. The observed data are consistent with standard model expectations. Upper limits at 95% confidence level are set on the product of the cross section and branching fraction for an H$^{\pm}$ in the mass range of 300 to 700 GeV, assuming an H with a mass of 200 GeV. The observed limit ranges from 0.080 pb at 300 GeV to 0.013 pb at 700 GeV. These are the first limits on this process at the LHC.
CMS Publications
Compact Muon Solenoid
LHC, CERN