Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC

CMS Collaboration; Philip S Baringer; Alice Bean; Gabriele Benelli; R. P. Kenny; Michael J Murray; Danny Noonan; Stephen J Sanders; Robert W Stringer; Jeffrey Scott Wood; S Chatrchyan; V Khachatryan; A. M Sirunyan; A Tumasyan; W Adam; T Bergauer; M Dragicevic; J Erö; C Fabjan; Yasar Onel

doi:10.1007/JHEP05(2013)145

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Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC

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Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC

CMS Collaboration, Philip S Baringer, Alice Bean, Gabriele Benelli, R. P. Kenny, Michael J Murray, Danny Noonan, Stephen J Sanders, Robert W Stringer, Jeffrey Scott Wood, …

Journal of high energy physics : JHEP, Vol.2013(5), 145

05/28/2013

DOI: 10.1007/JHEP05(2013)145

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Abstract

This is the publisher's version, also available electronically from http://link.springer.com/article/10.1007%2FJHEP05%282013%29145. A search for the standard model Higgs boson produced in association with a top-quark pair is presented using data samples corresponding to an integrated luminosity of 5.0 fb(−1) (5.1 fb(−1)) collected in pp collisions at the center-of-mass energy of 7 TeV (8 TeV). Events are considered where the top-quark pair decays to either one lepton+jets (tt-bar→ℓνqq-bar ′bb-bar) or dileptons (tt-bar→ℓ(+)νℓ(−)ν-bar bb-bar) , ℓ being an electron or a muon. The search is optimized for the decay mode H→bb-bar . The largest background to the tt-barH signal is top-quark pair production with additional jets. Artificial neural networks are used to discriminate between signal and background events. Combining the results from the 7 TeV and 8 TeV samples, the observed (expected) limit on the cross section for Higgs boson production in association with top-quark pairs for a Higgs boson mass of 125 GeV is 5.8 (5.2) times the standard model expectation.

Details

Title: Subtitle: Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC
Creators: CMS Collaboration
Philip S Baringer
Alice Bean
Gabriele Benelli
R. P. Kenny
Michael J Murray
Danny Noonan
Stephen J Sanders
Robert W Stringer
Jeffrey Scott Wood
S Chatrchyan
V Khachatryan
A. M Sirunyan
A Tumasyan
W Adam
T Bergauer
M Dragicevic
J Erö
C Fabjan
Yasar Onel (Contributor) - Physics and Astronomy
Resource Type: Journal article
Publication Details: Journal of high energy physics : JHEP, Vol.2013(5), 145
Publisher: Springer-Verlag
DOI: 10.1007/JHEP05(2013)145
ISSN: 1126-6708
eISSN: 1029-8479
Language: English
Date published: 05/28/2013
Academic Unit: Physics and Astronomy
Record Identifier: 9984429055002771

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