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

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dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbbott, D.C.
dc.contributor.authorAbed Abud, A.
dc.contributor.authorAbeling, K.
dc.contributor.authorAbhayasinghe, D.K.
dc.contributor.authorAbidi, S.H.
dc.contributor.authorAbouZeid, O.S.
dc.contributor.authorAbraham, N.L.
dc.contributor.authorAbramowicz, H.
dc.contributor.authorAbreu, H.
dc.contributor.authorAbulaiti, Y.
dc.contributor.authorAcharya, B.S.
dc.contributor.authorAchkar, B.
dc.contributor.authorAdachi, S.
dc.contributor.authorAdam, L.
dc.contributor.authorAdam Bourdarios, C.
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAdamek, L.
dc.contributor.authorAdelman, J.
dc.contributor.authoret al.
dc.date.issued2020
dc.description.abstractThis letter presents a combination of searches for Higgs boson pair production using up to 36.1fb−1of 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 b ̄bb ̄b, b ̄bW+W−, b ̄bτ+τ−, W+W−W+W−, b ̄bγγand W+W−γγfinal 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.
dc.description.statementofresponsibilityG. Aad ... Paul Jackson ... Martin White ... Damir Duvnjak ... Jason Oliver, ... Andreas Petridis ... et al.
dc.identifier.citationPhysics Letters B, 2020; 800:1-23
dc.identifier.doi10.1016/j.physletb.2019.135103
dc.identifier.issn0370-2693
dc.identifier.issn1873-2445
dc.identifier.urihttp://hdl.handle.net/2440/131279
dc.language.isoen
dc.publisherElsevier
dc.rights© 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/). Funded by SCOAP3
dc.source.urihttps://doi.org/10.1016/j.physletb.2019.135103
dc.titleCombination of searches for Higgs boson pairs in pp collisions at √s=13TeV with the ATLAS detector
dc.title.alternativeCombination of searches for Higgs boson pairs in pp collisions at root s=13TeV with the ATLAS detector
dc.typeJournal article
pubs.publication-statusPublished

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