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Article: Combination of searches for Higgs boson pairs in pp collisions at √s = 13 TeV with the ATLAS detector

TitleCombination of searches for Higgs boson pairs in pp collisions at √s = 13 TeV with the ATLAS detector
Authors
KeywordsHiggs bosons
Standard model (particle physics)
Boson pair
Issue Date2020
PublisherElsevier: SCOAP3. The Journal's web site is located at http://www.elsevier.com/locate/physletb
Citation
Physics Letters B, 2020, v. 800, p. 135103:1-135103:23 How to Cite?
AbstractThis 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 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<κλ<12.0 (−5.8<κλ<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. © 2019 The Author(s)
Persistent Identifierhttp://hdl.handle.net/10722/280384
ISSN
2023 Impact Factor: 4.3
2023 SCImago Journal Rankings: 1.593
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLO, CY-
dc.contributor.authorParedes Hernandez, D-
dc.contributor.authorSalvucci, A-
dc.contributor.authorTu, Y-
dc.contributor.authorThe ATLAS Collaboration-
dc.contributor.authorPizzimento, L-
dc.date.accessioned2020-02-07T07:40:15Z-
dc.date.available2020-02-07T07:40:15Z-
dc.date.issued2020-
dc.identifier.citationPhysics Letters B, 2020, v. 800, p. 135103:1-135103:23-
dc.identifier.issn0370-2693-
dc.identifier.urihttp://hdl.handle.net/10722/280384-
dc.description.abstractThis 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 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<κλ<12.0 (−5.8<κλ<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. © 2019 The Author(s)-
dc.languageeng-
dc.publisherElsevier: SCOAP3. The Journal's web site is located at http://www.elsevier.com/locate/physletb-
dc.relation.ispartofPhysics Letters B-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectHiggs bosons-
dc.subjectStandard model (particle physics)-
dc.subjectBoson pair-
dc.titleCombination of searches for Higgs boson pairs in pp collisions at √s = 13 TeV with the ATLAS detector-
dc.typeArticle-
dc.identifier.emailParedes Hernandez, D: dparedes@hku.hk-
dc.identifier.emailTu, Y: yanjuntu@hku.hk-
dc.identifier.authorityTu, Y=rp01971-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1016/j.physletb.2019.135103-
dc.identifier.scopuseid_2-s2.0-85075879322-
dc.identifier.hkuros309063-
dc.identifier.volume800-
dc.identifier.spage135103:1-
dc.identifier.epage135103:23-
dc.identifier.isiWOS:000503832500009-
dc.publisher.placeNetherlands-
dc.identifier.issnl0370-2693-

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