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

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dc.WoS.categoriesAstronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fieldsen_US
dc.authorid0000-0001-5050-8441en_US
dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2020-12-16T13:09:24Z
dc.date.available2020-12-16T13:09:24Z
dc.date.issued2020-01-10
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description23 pagesen_US
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 root 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 (b) over barb (b) over bar, b (b) over barW(+)W(-), b (b) over bar tau(+)tau(-), W+W-W+W-, b (b) over bar gamma gamma and W+W-gamma gamma 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 (kappa(lambda)) 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 < kappa(lambda) < 12.0 (-5.8 < kappa(lambda) < 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. (C) 2019 The Author(s). Published by Elsevier B.V.en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1016/j.physletb.2019.135103
dc.identifier.issn1873-2445
dc.identifier.issn0370-2693
dc.identifier.scopus2-s2.0-85075879322en_US
dc.identifier.urihttps://hdl.handle.net/11411/2880
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2019.135103
dc.identifier.wosWOS:000503832500009en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors1000+en_US
dc.publisherElsevieren_US
dc.relation.ispartofPhysics Letters Ben_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectStandard Modelen_US
dc.subjectMassen_US
dc.subjectLHCen_US
dc.subjectProgramen_US
dc.subjectEventsen_US
dc.subjectSushien_US
dc.titleCombination of searches for Higgs boson pairs in pp collisions at root s=13 TeV with the ATLAS detector
dc.typeArticle
dc.volume800en_US

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