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

Khachatryan, Vardan

doi:10.1007/JHEP11(2015)071

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

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 sensitive 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. Stringent 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, m_h^max, m_h^mod+, m_h^mod–, light-stau and light-stop. Observed 95% confidence level upper limits on tan β, ranging from 14 to 50, are obtained in the m_h^mod+ benchmark scenario.

Authors:

Khachatryan, Vardan ^[1]

Yerevan Physics Inst. (YerPhI), Yerevan (Armenia). et al.

Publication Date:: Wed Nov 11 00:00:00 EST 2015

Research Org.:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Org.:: CMS

OSTI Identifier:: 1212690

Report Number(s):: FERMILAB-PUB-15-275-CMS; CERN-PH-EP-2015-133; CMS-HIG-14-017
Journal ID: ISSN 1029-8479; arXiv eprint number arXiv:1506.08329

Grant/Contract Number:: AC02-07CH11359

Resource Type:: Accepted Manuscript

Journal Name:: Journal of High Energy Physics (Online)

Additional Journal Information:: Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 11; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; supersymmetry; Hadron-Hadron Scattering; Beyond Standard Model; Higgs physics

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                    Khachatryan, Vardan. Search for neutral MSSM Higgs bosons decaying into a pair of bottom quarks.  United States: N. p., 2015. 
Web.  doi:10.1007/JHEP11(2015)071.

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                    Khachatryan, Vardan. Search for neutral MSSM Higgs bosons decaying into a pair of bottom quarks.  United States.  https://doi.org/10.1007/JHEP11(2015)071

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                    Khachatryan, Vardan. Wed .  
"Search for neutral MSSM Higgs bosons decaying into a pair of bottom quarks".  United States.  https://doi.org/10.1007/JHEP11(2015)071.  https://www.osti.gov/servlets/purl/1212690.

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@article{osti_1212690,

  title        = {Search for neutral MSSM Higgs bosons decaying into a pair of bottom quarks},

  author       = {Khachatryan, Vardan},

  abstractNote = {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 sensitive 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. Stringent 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, mhmax, mhmod+, mhmod–, light-stau and light-stop. Observed 95% confidence level upper limits on tan β, ranging from 14 to 50, are obtained in the mhmod+ benchmark scenario.},

  doi          = {10.1007/JHEP11(2015)071},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 11,

  volume       = 2015,

  place        = {United States},

  year         = {Wed Nov 11 00:00:00 EST 2015},

  month        = {Wed Nov 11 00:00:00 EST 2015}

}

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Figure 1: Example Feynman diagrams of the signal processes.

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