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Search for a very light NMSSM Higgs boson produced in decays of the 125 GeV scalar boson and decaying into ? leptons in pp collisions at ?s=8 TeV

Abstract: A search for a very light Higgs boson decaying into a pair of ? leptons is presented within the framework of the next-to-minimal supersymmetric standard model. This search is based on a data set corresponding to an integrated luminosity of 19.7 fb?1 of proton-proton collisions collected by the CMS experiment at a centre-of-mass energy of 8 TeV. The signal is defined by the production of either of the two lightest scalars, h1 or h2, via gluon-gluon fusion and subsequent decay into a pair of the lightest Higgs bosons, a1 or h1. The h1 or h2 boson is identified with the observed state at a mass of 125 GeV. The analysis searches for decays of the a1 (h1) states into pairs of ? leptons and covers a mass range for the a1 (h1) boson of 4 to 8 GeV. The search reveals no significant excess in data above standard model background expectations, and an upper limit is set on the signal production cross section times branching fraction as a function of the a1 (h1) boson mass. The 95% confidence level limit ranges from 4.5 pb at ma1(mh1) = 8 GeV to 10.3 pb at ma1(mh1)=5 GeV.

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

 Fuente: Journal of High Energy Physics, Vol. 2016, Num. 1, Art. Num. 079

Editorial: Springer Verlag

 Fecha de publicación: 01/01/2016

Nº de páginas: 46

Tipo de publicación: Artículo de Revista

 DOI: 10.1007/JHEP01(2016)079

ISSN: 1126-6708,1029-8479

Url de la publicación: https://doi.org/10.1007/JHEP01(2016)079

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