Home > Research > Publications & Outputs > Search for Higgs boson pair production in the b...

Electronic data

  • art%3A10.1140%2Fepjc%2Fs10052-015-3628-x

    Rights statement: © CERN for the benefit of the ATLAS collaboration 2015. This article is published with open access at Springerlink.com EPJC is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0

    Final published version, 3.16 MB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License

Links

Text available via DOI:

View graph of relations

Search for Higgs boson pair production in the bb¯bb¯ final state from pp collisions at s√=8 TeVwith the ATLAS detector

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
  • The ATLAS collaboration
Close
Article number412
<mark>Journal publication date</mark>9/09/2015
<mark>Journal</mark>European Physical Journal C: Particles and Fields
Issue number9
Volume75
Number of pages32
Publication StatusPublished
<mark>Original language</mark>English

Abstract

A search for Higgs boson pair production pp→hh is performed with 19.5 fb−1 of proton–proton collision data at 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 bb¯ 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→G∗KK→hh→bb¯bb¯ of 3.2 (2.3) fb is set for a Kaluza–Klein graviton G∗KK mass of 1.0 (1.5) TeV, at the 95 % confidence level. The search for non-resonant Standard Model hh production sets an observed 95 % confidence level upper limit on the production cross-section σ(pp→hh→bb¯bb¯) of 202 fb, compared to a Standard Model prediction of σ(pp→hh→bb¯bb¯)=3.6±0.5 fb.