Header

UZH-Logo

Maintenance Infos

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


CMS Collaboration; Chatrchyan, S; Khachatryan, V; Sirunyan, A M; et al; Chiochia, V; Kilminster, B; Robmann, P (2013). Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC. Journal of High Energy Physics, 05:145.

Abstract

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¯→ℓνqq¯′bb¯) or dileptons (tt¯→ℓ+νℓ−ν¯bb¯) , ℓ being an electron or a muon. The search is optimized for the decay mode H→bb¯ . The largest background to the tt¯H 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.

Abstract

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¯→ℓνqq¯′bb¯) or dileptons (tt¯→ℓ+νℓ−ν¯bb¯) , ℓ being an electron or a muon. The search is optimized for the decay mode H→bb¯ . The largest background to the tt¯H 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.

Statistics

Citations

11 citations in Web of Science®
28 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

49 downloads since deposited on 14 Feb 2014
18 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2013
Deposited On:14 Feb 2014 15:53
Last Modified:05 Apr 2016 17:38
Publisher:Springer
ISSN:1029-8479
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/JHEP05(2013)145

Download

Download PDF  'Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC'.
Preview
Content: Published Version
Filetype: PDF
Size: 1MB
View at publisher