Searches for heavy Higgs bosons in two-Higgs-doublet models and for t ? ch decay using multilepton and diphoton final states in pp collisions at 8 TeV

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dc.authoridRuiz Jimeno, Alberto/0000-0002-3639-0368
dc.authoridOZOK, FERHAT/0000-0001-9630-7362
dc.authoridSavina, Maria/0000-0002-9020-7384
dc.authoridBaarmand, Marc/0000-0002-9792-8619
dc.authoridPedrini, Daniele/0000-0003-2414-4175
dc.authoridDominguez, Aaron/0000-0002-7420-5493
dc.authoridVernieri, Caterina/0000-0002-0235-1053
dc.contributor.authorKhachatryan, V.
dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorBergauer, T.
dc.contributor.authorDragicevic, M.
dc.contributor.authorThe CMS Collaboration
dc.date.accessioned2025-03-07T20:17:59Z
dc.date.available2025-03-07T20:17:59Z
dc.date.issued2014
dc.departmentÇağ Üniversitesi
dc.description.abstractSearches are presented for heavy scalar (H) and pseudoscalar (A) Higgs bosons posited in the two doublet model (2HDM) extensions of the standard model (SM). These searches are based on a data sample of pp collisions collected with the CMS experiment at the LHC at a center-of-mass energy of root s = 8 TeV and corresponding to an integrated luminosity of 19.5 fb(-1). The decays H -> hh and A -> Zh, where h denotes an SM-like Higgs boson, lead to events with three or more isolated charged leptons or with a photon pair accompanied by one or more isolated leptons. The search results are presented in terms of the H and A production cross sections times branching fractions and are further interpreted in terms of 2HDM parameters. We place 95% C.L. cross section upper limits of approximately 7 pb on sigma B for H -> hh and 2 pb for A -> Zh. Also presented are the results of a search for the rare decay of the top quark that results in a charm quark and an SM Higgs boson, t -> ch, the existence of which would indicate a nonzero flavor-changing Yukawa coupling of the top quark to the Higgs boson. We place a 95% C.L. upper limit of 0.56% on B(t -> ch).
dc.description.sponsorshipDirect For Mathematical & Physical Scien; Division Of Physics [1314131, 1151640, 1306951] Funding Source: National Science Foundation; Division Of Physics; Direct For Mathematical & Physical Scien [1205960, 1211067] Funding Source: National Science Foundation; STFC [ST/K001639/1, ST/J50094X/1, ST/I005912/1, ST/I505580/1, ST/J005665/1, ST/J004901/1, ST/K003542/1, ST/K003844/1, ST/H00081X/2, ST/L00609X/1] Funding Source: UKRI
dc.identifier.doi10.1103/PhysRevD.90.112013
dc.identifier.issn2470-0010
dc.identifier.issn2470-0029
dc.identifier.issue11
dc.identifier.urihttps://doi.org/10.1103/PhysRevD.90.112013
dc.identifier.urihttps://hdl.handle.net/20.500.12507/3126
dc.identifier.volume90
dc.identifier.wosWOS:000348360900002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review D
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20241226
dc.titleSearches for heavy Higgs bosons in two-Higgs-doublet models and for t ? ch decay using multilepton and diphoton final states in pp collisions at 8 TeV
dc.typeArticle

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