Aad, G;
Abbott, B;
Abbott, DC;
Abed Abud, A;
Abeling, K;
Abhayasinghe, DK;
Abidi, SH;
... et al., .; + view all
(2020)
Combination of searches for Higgs boson pairs in pp collisions at \sqrt{s} = 13 TeV with the ATLAS detector.
Physics Letters B
, 800
, Article 135103. 10.1016/j.physletb.2019.135103.
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Abstract
.This letter presents a combination of searches for Higgs boson pair production using up to 36.1 fb^{−1} of proton–proton collision data at a centre-of-mass energy \sqrt{s} = 13 TeV recorded with the ATLAS detector at the LHC. The combination is performed using six analyses searching for Higgs boson pairs decaying into the bb¯bb¯, bb¯W+W−, bb¯τ+τ−, W+W−W+W−, bb¯γγ and W+W−γγ final states. Results are presented for non-resonant and resonant Higgs boson pair production modes. No statistically significant excess in data above the Standard Model predictions is found. The combined observed (expected) limit at 95% confidence level on the non-resonant Higgs boson pair production cross-section is 6.9 (10) times the predicted Standard Model cross-section. Limits are also set on the ratio (κλ) of the Higgs boson self-coupling to its Standard Model value. This ratio is constrained at 95% confidence level in observation (expectation) to −5.0<κ_{λ}<12.0 (−5.8<κ_{λ}<12.0). In addition, limits are set on the production of narrow scalar resonances and spin-2 Kaluza–Klein Randall–Sundrum gravitons. Exclusion regions are also provided in the parameter space of the habemus Minimal Supersymmetric Standard Model and the Electroweak Singlet Model.
| Type: | Article |
|---|---|
| Title: | Combination of searches for Higgs boson pairs in pp collisions at \sqrt{s} = 13 TeV with the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.physletb.2019.135103 |
| Publisher version: | https://doi.org/10.1016/j.physletb.2019.135103 |
| Language: | English |
| Additional information: | © 2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10088209 |
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