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Title: Search for Higgs boson pair production in the bb¯bb¯ final state from pp collision at √s = 8 TeV with the ATLAS detector

Abstract

A search for Higgs boson pair production \(pp \rightarrow hh\) is performed with 19.5 fb\(^{-1}\) of proton–proton collision data at \(\sqrt{s}=8\) TeV, which were recorded by the ATLAS detector at the Large Hadron Collider in 2012. The decay products of each Higgs boson are reconstructed as a high-momentum \(b\bar{b}\) system with either a pair of small-radius jets or a single large-radius jet, the latter exploiting jet substructure techniques and associated b-tagged track-jets. No evidence for resonant or non-resonant Higgs boson pair production is observed. The data are interpreted in the context of the Randall–Sundrum model with a warped extra dimension as well as the two-Higgs-doublet model. An upper limit on the cross-section for \(pp\rightarrow G^{*}_{\mathrm {KK}} \rightarrow hh \rightarrow b\bar{b}b\bar{b} \) of 3.2 (2.3) fb is set for a Kaluza–Klein graviton \(G^{*}_{\mathrm {KK}}\) mass of 1.0 (1.5) TeV, at the 95 % confidence level. Thus, the search for non-resonant Standard Model hh production sets an observed 95 % confidence level upper limit on the production cross-section \(\sigma (pp \rightarrow hh \rightarrow b\bar{b}b\bar{b})\) of 202 fb, compared to a Standard Model prediction of \(\sigma (pp \rightarrow hh \rightarrow b\bar{b}b\bar{b}) = 3.6 \pm 0.5\) fb.

Authors:
 [1]
  1. Aix-Marseille Univ. and CNRS/IN2P3, Marseille (France). et al.
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
ATLAS Collaboration
OSTI Identifier:
1222761
Alternate Identifier(s):
OSTI ID: 1222748; OSTI ID: 1223291; OSTI ID: 1223292; OSTI ID: 1409414
Report Number(s):
AC03-76SF00515
Journal ID: ISSN 1434-6044
Grant/Contract Number:  
SC00112704; AC02-06CH11357; AC02-05CH11231; AC03-76SF00515; AC02-98CH10886; AC02-76CH00016; SC0012704; AC03-76SF00098
Resource Type:
Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 75; Journal Issue: 9; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Aad, G. Search for Higgs boson pair production in the bb¯bb¯ final state from pp collision at √s = 8 TeV with the ATLAS detector. United States: N. p., 2015. Web. doi:10.1140/epjc/s10052-015-3628-x.
Aad, G. Search for Higgs boson pair production in the bb¯bb¯ final state from pp collision at √s = 8 TeV with the ATLAS detector. United States. doi:10.1140/epjc/s10052-015-3628-x.
Aad, G. Wed . "Search for Higgs boson pair production in the bb¯bb¯ final state from pp collision at √s = 8 TeV with the ATLAS detector". United States. doi:10.1140/epjc/s10052-015-3628-x. https://www.osti.gov/servlets/purl/1222761.
@article{osti_1222761,
title = {Search for Higgs boson pair production in the bb¯bb¯ final state from pp collision at √s = 8 TeV with the ATLAS detector},
author = {Aad, G.},
abstractNote = {A search for Higgs boson pair production \(pp \rightarrow hh\) is performed with 19.5 fb\(^{-1}\) of proton–proton collision data at \(\sqrt{s}=8\) TeV, which were recorded by the ATLAS detector at the Large Hadron Collider in 2012. The decay products of each Higgs boson are reconstructed as a high-momentum \(b\bar{b}\) system with either a pair of small-radius jets or a single large-radius jet, the latter exploiting jet substructure techniques and associated b-tagged track-jets. No evidence for resonant or non-resonant Higgs boson pair production is observed. The data are interpreted in the context of the Randall–Sundrum model with a warped extra dimension as well as the two-Higgs-doublet model. An upper limit on the cross-section for \(pp\rightarrow G^{*}_{\mathrm {KK}} \rightarrow hh \rightarrow b\bar{b}b\bar{b} \) of 3.2 (2.3) fb is set for a Kaluza–Klein graviton \(G^{*}_{\mathrm {KK}}\) mass of 1.0 (1.5) TeV, at the 95 % confidence level. Thus, the search for non-resonant Standard Model hh production sets an observed 95 % confidence level upper limit on the production cross-section \(\sigma (pp \rightarrow hh \rightarrow b\bar{b}b\bar{b})\) of 202 fb, compared to a Standard Model prediction of \(\sigma (pp \rightarrow hh \rightarrow b\bar{b}b\bar{b}) = 3.6 \pm 0.5\) fb.},
doi = {10.1140/epjc/s10052-015-3628-x},
journal = {European Physical Journal. C, Particles and Fields},
number = 9,
volume = 75,
place = {United States},
year = {2015},
month = {9}
}

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