Search for heavy Higgs bosons decaying to a top quark pair in proton-proton collisions at ?s = 13 TeV

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dc.WoS.categoriesPhysics, Particles & Fieldsen_US
dc.contributor.authorYetkin, Elif Aslı
dc.date.accessioned2020-05-20T10:45:36Z
dc.date.available2020-05-20T10:45:36Z
dc.date.issued2020-04-27
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractA search is presented for additional scalar (H) or pseudoscalar (A) Higgs bosons decaying to a top quark pair in proton-proton collisions at a center-of-mass energy of 13 TeV. The data set analyzed corresponds to an integrated luminosity of 35.9 fb(-1) collected by the CMS experiment at the LHC. Final states with one or two charged leptons are considered. The invariant mass of the reconstructed top quark pair system and variables that are sensitive to the spin of the particles decaying into the top quark pair are used to search for signatures of the H or A bosons. The interference with the standard model top quark pair background is taken into account. A moderate signal-like deviation compatible with an A boson with a mass of 400 GeV is observed with a global significance of 1.9 standard deviations. New stringent constraints are reported on the strength of the coupling of the hypothetical bosons to the top quark, with the mass of the bosons ranging from 400 to 750 GeV and their total relative width from 0.5 to 25%. The results of the search are also interpreted in a minimal supersymmetric standard model scenario. Values of m(A) from 400 to 700 GeV are probed, and a region with values of tan beta below 1.0 to 1.5, depending on m(A), is excluded at 95% confidence level.en_US
dc.description.sponsorshipBMBWF (Austria) Austrian Science Fund (FWF) Fonds de la Recherche Scientifique - FNRSen_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1007/JHEP04(2020)171
dc.identifier.issn1029-8479
dc.identifier.scopus2-s2.0-85085935293en_US
dc.identifier.urihttps://hdl.handle.net/11411/2042
dc.identifier.urihttps://doi.org/10.1007/JHEP04(2020)171
dc.identifier.wosWOS:000529541000001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.issue4en_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors1000+en_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal of High Energy Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.scopus.SNIP1.132en_US
dc.subjectHadron-Hadron scattering (experiments)en_US
dc.subjectHiggs physicsen_US
dc.subjectTop physicsen_US
dc.titleSearch for heavy Higgs bosons decaying to a top quark pair in proton-proton collisions at ?s = 13 TeV
dc.typeArticle

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