Search for neutral MSSM Higgs bosons decaying into a pair of bottom quarks

Khachatryan, V. and Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Asilar, E. and Filipovic, Nicolas and Bencze, György and Hajdu, Csaba and Hidas, Pál and Horváth, Dezső and Siklér, Ferenc and Veszprémi, Viktor and Vesztergombi, György and Zsigmond, Anna Júlia and Karancsi, János and Molnár, József and Bartók, Márton and Makovec, Alajos and Ujvári, Balázs and Veres, Gábor (2015) Search for neutral MSSM Higgs bosons decaying into a pair of bottom quarks. JOURNAL OF HIGH ENERGY PHYSICS (11). ISSN 1126-6708

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Abstract

A search for neutral Higgs bosons decaying into a bb quark pair and produced in association with at least one additional b quark is presented. This signature is sen- sitive to the Higgs sector of the minimal supersymmetric standard model (MSSM) with large values of the parameter tan β. The analysis is based on data from proton- proton collisions at a center-of-mass energy of 8 TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.7 fb−1. The results are combined with a previous analysis based on 7 TeV data. No signal is observed. Strin- gent upper limits on the cross section times branching fraction are derived for Higgs bosons with masses up to 900 GeV, and the results are interpreted within different MSSM benchmark scenarios, mmax h , mmod+ h , mmod– h , light-stau and light-stop. Observed 95% confidence level upper limits on tan β, ranging from 14 to 50, are obtained in the mmod+ h benchmark scenario.

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