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Search for the Standard Model Higgs boson decaying into bb ̄ produced in association with top quarks decaying hadronically in pp collisions at √s = 8 TeV with the ATLAS detector

The, ATLAS collaboration
•
Aad, G.
•
Abbott, B.
altro
GIORDANI, Mario
2016
  • journal article

Periodico
JOURNAL OF HIGH ENERGY PHYSICS
Abstract
A search for Higgs boson production in association with a pair of top quarks (t (t) over barH) is performed, where the Higgs boson decays to b (b) over bar, and both top quarks decay hadronically. The data used correspond to an integrated luminosity of 20.3 fb(-1) of pp collisions at root s = 8 TeV collected with the ATLAS detector at the Large Hadron Collider. The search selects events with at least six energetic jets and uses a boosted decision tree algorithm to discriminate between signal and Standard Model background. The dominant multijet background is estimated using a dedicated data-driven technique. For a Higgs boson mass of 125 GeV, an upper limit of 6.4 (5.4) times the Standard Model cross section is observed (expected) at 95% confidence level. The best-fit value for the signal strength is mu = 1.6 +/- 2.6 times the Standard Model expectation for m(H) = 125 GeV. Combining all t (t) over barH searches carried out by ATLAS at root s = 8 and 7 TeV, an observed (expected) upper limit of 3.1 (1.4) times the Standard Model expectation is obtained at 95% confidence level, with a signal strength mu = 1.7 +/- 0.8.
DOI
10.1007/JHEP05(2016)160
WOS
WOS:000377602900001
Archivio
http://hdl.handle.net/11390/1097426
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84973664656
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973664656&partnerID=40&md5=0799d5479e025ccade5897e25979694e
Diritti
metadata only access
Web of Science© citazioni
14
Data di acquisizione
Mar 26, 2024
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