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Search for the standard model higgs boson produced in association with top quarks and decaying into bb in pp collisions at √s = 8 TeV with the ATLAS detector

Aad, G.
•
Abbott, B.
•
Abdallah, J.
altro
Zwalinski, L.
2015
  • journal article

Periodico
THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS
Abstract
A search for the Standard Model Higgs boson produced in association with a top-quark pair, , is presented. The analysis uses 20.3 fb(-1) of pp collision data at , collected with the ATLAS detector at the Large Hadron Collider during 2012. The search is designed for the decay mode and uses events containing one or two electrons or muons. In order to improve the sensitivity of the search, events are categorised according to their jet and b-tagged jet multiplicities. A neural network is used to discriminate between signal and background events, the latter being dominated by +jets production. In the single-lepton channel, variables calculated using a matrix element method are included as inputs to the neural network to improve discrimination of the irreducible background. No significant excess of events above the background expectation is found and an observed (expected) limit of 3.4 (2.2) times the Standard Model cross section is obtained at 95 % confidence level. The ratio of the measured signal cross section to the Standard Model expectation is found to be assuming a Higgs boson mass of 125 Gev.
DOI
10.1140/epjc/s10052-015-3543-1
WOS
WOS:000358606700001
Archivio
http://hdl.handle.net/11390/1096696
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84938308942
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938308942&partnerID=40&md5=3da8e9c6db6479f7edb6d5b18c41c2c6
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Soggetti
  • Physics and Astronomy...

  • Engineering (miscella...

Scopus© citazioni
108
Data di acquisizione
Jun 7, 2022
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Web of Science© citazioni
121
Data di acquisizione
Mar 28, 2024
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Data di acquisizione
Apr 19, 2024
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