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Search for a light charged Higgs boson in the H±?cs channel in proton-proton collisions at ?s=13??TeV

Abstract: A search is conducted for a low-mass charged Higgs boson produced in a top quark decay and subsequently decaying into a charm and a strange quark. The data sample was recorded in proton-proton collisions at ?s=13?TeV by the CMS experiment at the LHC and corresponds to an integrated luminosity of 35.9?fb-1. The search is performed in the process of top quark pair production, where one top quark decays to a bottom quark and a charged Higgs boson and the other to a bottom quark and a W boson. With the W boson decaying to a charged lepton (electron or muon) and a neutrino, the final state comprises an isolated lepton, missing transverse momentum, and at least four jets, of which two are tagged as b jets. To enhance the search sensitivity, one of the jets originating from the charged Higgs boson is required to satisfy a charm tagging selection. No significant excess beyond standard model predictions is found in the dijet invariant mass distribution. An upper limit in the range 1.68%?0.25% is set on the branching fraction of the top quark decay to the charged Higgs boson and bottom quark for a charged Higgs boson mass between 80 and 160 GeV.

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 Fuente: Phys. Rev. D 102, 072001 (2020)

Editorial: American Physical Society

 Fecha de publicación: 01/10/2020

Nº de páginas: 26

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevD.102.072001

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Url de la publicación: https://doi.org/10.1103/PhysRevD.102.072001