Observation of the Semileptonic Decay D0 → a0ð980Þ − e + νe and Evidence for D+ → a0ð980Þ0e + νe

dc.contributor.authorYüncü, Alperen
dc.contributor.departmentFen Fakültesitr_TR
dc.date.accessioned2020-02-18T12:23:48Z
dc.date.available2020-02-18T12:23:48Z
dc.date.issued2018
dc.description.abstractUsing an e+e- collision data sample of 2.93 fb-1 collected at a center-of-mass energy of 3.773 GeV by the BESIII detector at BEPCII, we report the observation of D0→a0(980)-e+νe and evidence for D+→a0(980)0e+νe with significances of 6.4σ and 2.9σ, respectively. The absolute branching fractions are determined to be B(D0→a0(980)-e+νe)×B(a0(980)-→ηπ-)=[1.33-0.29+0.33(stat)±0.09(syst)]×10-4 and B(D+→a0(980)0e+νe)×B(a0(980)0→ηπ0)=[1.66-0.66+0.81(stat)±0.11(syst)]×10-4. This is the first time the a0(980) meson has been measured in a D0 semileptonic decay, which would open one more interesting page in the investigation of the nature of the puzzling a0(980) states. © 2018 authors. Published by the American Physical Society.tr_TR
dc.description.indexWos
dc.description.indexScopus
dc.identifier.endpage08tr_TR
dc.identifier.issn/e-issn0031-9007
dc.identifier.issn/e-issn1079-7114
dc.identifier.issue8tr_TR
dc.identifier.other081802tr_TR
dc.identifier.startpage01tr_TR
dc.identifier.urihttps://doi.org/10.1103/PhysRevLett.121.081802tr_TR
dc.identifier.urihttp://hdl.handle.net/20.500.12575/69753
dc.identifier.volume121tr_TR
dc.language.isoentr_TR
dc.relation.isversionof10.1103/PhysRevLett.121.081802tr_TR
dc.relation.journalPhysical Review Letterstr_TR
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıtr_TR
dc.rightsCC0 1.0 Universal*
dc.rights.urihttp://creativecommons.org/publicdomain/zero/1.0/*
dc.titleObservation of the Semileptonic Decay D0 → a0ð980Þ − e + νe and Evidence for D+ → a0ð980Þ0e + νetr_TR
dc.typeArticletr_TR

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