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Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in l+l-bbfinal states

Abstract: Results are reported on a search for decays of a pseudoscalar A boson into a Z boson and a light scalar h boson, where the Z boson decays into a pair of oppositely-charged electrons or muons, and the h boson decays into bb. The search is based on data from proton–proton collisions at a center-of-mass energy vs=8TeV collected with the CMS detector, corresponding to an integrated luminosity of 19.7 fb-1. The h boson is assumed to be the standard model-like Higgs boson with a mass of 125 GeV. With no evidence for signal, upper limits are obtained on the product of the production cross section and the branching fraction of the A boson in the Zh channel. Results are also interpreted in the context of two Higgs doublet models.

 Fuente: Physics Letters B, Vol. 748, Pp. 221–243, 2015

 Publisher: Elsevier

 Publication date: 01/09/2015

 No. of pages: 23

 Publication type: Article

 DOI: 10.1016/j.physletb.2015.07.010

 ISSN: 0370-2693,1873-2445

 Spanish project: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

 Publication Url: https://doi.org/10.1016/j.physletb.2015.07.010

Authorship

KHACHATRYAN, VLADIMIR

JAVIER ANDRES BROCHERO CIFUENTES

JUAN RAMON CASTIÑEIRAS DE SAA

MARCOS FERNANDEZ GARCIA

ALBERTO GRAZIANO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO