Measurements of (tt)over-barH Production and the CP Structure of the Yukawa Interaction between the Higgs Boson and Top Quark in the Diphoton Decay Channel
dc.WoS.categories | Physics, Multidisciplinary | en_US |
dc.authorid | 0000-0002-9007-8260 | en_US |
dc.contributor.author | Yetkin, Elif Aslı | |
dc.date.accessioned | 2020-11-10T09:51:41Z | |
dc.date.available | 2020-11-10T09:51:41Z | |
dc.date.issued | 2020-08-05 | |
dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | en_US |
dc.description | 18 pages | en_US |
dc.description.abstract | The first observation of the (tt) over barH process in a single Higgs boson decay channel with the full reconstruction of the final state (H -> gamma gamma) is presented, with a significance of 6.6 standard deviations (sigma). The CP structure of Higgs boson couplings to fermions is measured, resulting in an exclusion of the pure CP-odd structure of the top Yukawa coupling at 3.2 sigma. The measurements are based on a sample of protonproton collisions at a center-of-mass energy root s = 13 TeV collected by the CMS detector at the LHC, corresponding to an integrated luminosity of 137 fb(-1). The cross section times branching fraction of the (tt) over barH process is measured to be sigma B-(tt) over barH(gamma gamma) = 1.56(-0.32)(+0.34) th, which is compatible with the standard model prediction of 1.13(-0.11)(+0.08) fb. The fractional contribution of the CP-odd component is measured to be f(CP)(Hu) = 0.00 +/- 0.33. | en_US |
dc.fullTextLevel | Full Text | en_US |
dc.identifier.doi | 10.1103/PhysRevLett.125.061801 | en_US |
dc.identifier.issn | 1079-7114 | |
dc.identifier.issn | 0031-9007 | |
dc.identifier.pmid | 32845700 | en_US |
dc.identifier.uri | https://hdl.handle.net/11411/2558 | |
dc.identifier.uri | https://doi.org/10.1103/PhysRevLett.125.061801 | |
dc.identifier.wos | WOS:000555785600002 | en_US |
dc.identifier.wosquality | Q1 | en_US |
dc.indekslendigikaynak | Web of Science | en_US |
dc.indekslendigikaynak | PubMed | en_US |
dc.issue | 6 | en_US |
dc.language.iso | en | en_US |
dc.national | International | en_US |
dc.numberofauthors | 1000+ | en_US |
dc.publisher | Amer Physical Soc. | en_US |
dc.relation.ispartof | Physical Review Letters | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Search | en_US |
dc.title | Measurements of (tt)over-barH Production and the CP Structure of the Yukawa Interaction between the Higgs Boson and Top Quark in the Diphoton Decay Channel | en_US |
dc.type | Article | en_US |
dc.volume | 125 | en_US |