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Title
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Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons (H) in proton-proton collisions collected by the CMS experiment at the LHC at root s = 8 TeV. The data correspond to an integrated luminosity of 19.7 fb(-1). The search considers HH resonances with masses between 1 and 3 TeV, having final states of two b quark pairs. Each Higgs boson is produced with large momentum, and the hadronization products of the pair of b quarks can usually be reconstructed as single large jets. The background from multijet and t (t) over bar events is significantly reduced by applying requirements related to the flavor of the jet, its mass, and its substructure. The signal would be identified as a peak on top of the dijet invariant mass spectrum of the remaining background events. No evidence is observed for such a signal. Upper limits obtained at 95% confidence level for the product of the production cross section and branching fraction sigma(gg -> X) B(X -> HH -> b (b) over barb (b) over bar) range from 10 to 1.5 fb for the mass of X from 1.15 to 2.0 TeV, significantly extending previous searches. For a warped extra dimension theory with amass scale Lambda(R) = 1 TeV, the data exclude radion scalar masses between 1.15 and 1.55 TeV. |
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Language
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English
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Source (journal)
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European physical journal : C : particles and fields. - Berlin
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Publication
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Berlin
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2016
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ISSN
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1434-6044
1434-6052
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DOI
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10.1140/EPJC/S10052-016-4206-6
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Volume/pages
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76
:7
(2016)
, 25 p.
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Article Reference
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371
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ISI
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000399477700001
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Pubmed ID
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28280444
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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