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Search for Resonant and Nonresonant Higgs Boson Pair Production in the bbover ¯τ^{+}τ^{-} Decay Channel in pp Collisions at sqrts=13  TeV with the ATLAS Detector.

07:00 EST 9th November 2018 | BioPortfolio

Summary of "Search for Resonant and Nonresonant Higgs Boson Pair Production in the bbover ¯τ^{+}τ^{-} Decay Channel in pp Collisions at sqrts=13  TeV with the ATLAS Detector."

A search for resonant and nonresonant pair production of Higgs bosons in the bb[over ¯]τ^{+}τ^{-} final state is presented. The search uses 36.1  fb^{-1} of pp collision data with sqrt[s]=13  TeV recorded by the ATLAS experiment at the LHC in 2015 and 2016. Decays of the τ-lepton pairs with at least one τ lepton decaying to final states with hadrons and a neutrino are considered. No significant excess above the expected background is observed in the data. The cross-section times branching ratio for nonresonant Higgs boson pair production is constrained to be less than 30.9 fb, 12.7 times the standard model expectation, at 95% confidence level. The data are also analyzed to probe resonant Higgs boson pair production, constraining a model with an extended Higgs sector based on two doublets and a Randall-Sundrum bulk graviton model. Upper limits are placed on the resonant Higgs boson pair production cross-section times branching ratio, excluding resonances X in the mass range 305  GeV

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This article was published in the following journal.

Name: Physical review letters
ISSN: 1079-7114
Pages: 191801

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