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Search for Higgs boson pair production in the γγbb¯¯ final state with 13 TeV pp collision data collected by the ATLAS experiment
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The ATLAS collaboration (Including: Ennis, Joseph Stanford, Farrington, Sinead, Harrison, P. F., Jelinskas, Adomas, Martin, A., McNicol, Christopher John, Murray, W., Spangenberg, Martin and Xia, Ligang). (2018) Search for Higgs boson pair production in the γγbb¯¯ final state with 13 TeV pp collision data collected by the ATLAS experiment. Journal of High Energy Physics, 2018 (11). 40. doi:10.1007/JHEP11(2018)040 ISSN 1029-8479.
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Official URL: https://doi.org/10.1007/JHEP11(2018)040
Abstract
A search is performed for resonant and non-resonant Higgs boson pair production in the γγbb¯¯ final state. The data set used corresponds to an integrated luminosity of 36.1 fb−1 of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. No significant excess relative to the Standard Model expectation is observed. The observed limit on the non-resonant Higgs boson pair cross-section is 0.73 pb at 95% confidence level. This observed limit is equivalent to 22 times the predicted Standard Model cross-section. The Higgs boson self-coupling (κλ = λHHH/λ SMHHH) is constrained at 95% confidence level to −8.2 < κλ < 13.2. For resonant Higgs boson pair production through X→HH→γγbb¯¯, the limit is presented, using the narrow-width approximation, as a function of mX in the range 260 GeV < mX < 1000 GeV. The observed limits range from 1.1 pb to 0.12 pb over this mass range.
Item Type: | Journal Article | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Journal or Publication Title: | Journal of High Energy Physics | ||||||
Publisher: | Springer | ||||||
ISSN: | 1029-8479 | ||||||
Official Date: | 7 November 2018 | ||||||
Dates: |
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Volume: | 2018 | ||||||
Number: | 11 | ||||||
Article Number: | 40 | ||||||
DOI: | 10.1007/JHEP11(2018)040 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Is Part Of: | ATLAS Collaboration |
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