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Search for a charged Higgs boson in pp collisions at vs=8 TeV

Abstract: A search for a charged Higgs boson is performed with a data sample corresponding to an integrated luminosity of 19.7 ± 0.5 fb-1 collected with the CMS detector in proton-proton collisions at vs = 8, TeV. The charged Higgs boson is searched for in top quark decays for mH± < mt - mb, and in the direct production pp ? t(b)H± for mH± > mt - mb. The H± ? t±?t and H± ? tb decay modes in the final states th+jets, µth, l+jets, and ll’ (l =e, µ) are considered in the search. No signal is observed and 95% confidence level upper limits are set on the charged Higgs boson production. A model-independent upper limit on the product branching fraction B(t?H±b)B(H±?t±?t)=1.2-0.15% is obtained in the mass range mH± = 80–160 GeV, while the upper limit on the cross section times branching fraction s(pp?t(b)H±)B(H±? t±?t)=0.38-0.025 pb is set in the mass range mH+ = 180–600 GeV. Here, s(pp ? t(b)H±) stands for the cross section sum s(pp?t¯(b)H+)+s(pp?t(b¯)H-). Assuming B(H±?tb)=1B(H±?tb)=1 , an upper limit on s(pp ? t(b)H±) of 2.0–0.13 pb is set for mH± = 180–600 GeV. The combination of all considered decay modes and final states is used to set exclusion limits in the mH±-tan ß parameter space in different MSSM benchmark scenarios.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Journal of High Energy Physics, Vol. 2015, Num. 11, Art. Num. 18

Editorial: Springer Verlag

 Fecha de publicación: 01/11/2015

Nº de páginas: 64

Tipo de publicación: Artículo de Revista

 DOI: 10.1007/JHEP11(2015)018

ISSN: 1126-6708,1029-8479

 Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

Url de la publicación: https://doi.org/10.1007/JHEP11(2015)018

Autoría

KHACHATRYAN, VLADIMIR

JUAN RAMON CASTIÑEIRAS DE SAA

PABLO DE CASTRO MANZANO

MARCOS FERNANDEZ GARCIA

JUAN GARCIA FERRERO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO