First Observation of D+ -> eta mu(+)nu(mu) and Measurement of Its Decay Dynamics
| dc.WoS.categories | Physics, Multidisciplinary | en_US |
| dc.authorid | 0000-0001-5050-8441 | en_US |
| dc.contributor.author | Çetin, Serkant Ali | |
| dc.date.accessioned | 2020-11-16T13:48:42Z | |
| dc.date.available | 2020-11-16T13:48:42Z | |
| dc.date.issued | 2020-06-09 | |
| dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | en_US |
| dc.description | 9 pages | en_US |
| dc.description.abstract | By analyzing a data sample corresponding to an integrated luminosity of 2.93 fb(-1) collected at a center-of-mass energy of 3.773 GeV with the BESIII detector, we measure for the first time the absolute branching fraction of the D+ -> eta mu(+) nu(mu) decay to be BD+ ->eta mu+nu mu = (10.4 +/- 1.0(stat) +/- 0.5(syst)) x 10(-4). Using the world averaged value of BD+ ->eta e+nu e, the ratio of the two branching fractions is determined to be = BD+ ->eta mu+nu mu/BD+ ->eta e+nu e =0.91 +/- 0.13((stat+syst)), which agrees with the theoretical expectation of lepton flavor universality within uncertainty. By studying the differential decay rates in five four-momentum transfer intervals, we obtain the product of the hadronic form factor f(+)(eta)(0) and the c -> d Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cd vertical bar to be f(+)(eta)(0)vertical bar V-cd vertical bar = 0.087 +/- 0.008(stat) +/- 0.002(syst). Taking the input of vertical bar V-cd vertical bar from the global fit in the standard model, we determine f(+)(eta)(0) = 0.39 +/- 0.04(stat) +/- 0.01(syst). On the other hand, using the value of f(+)(eta)(0) calculated in theory, we find vertical bar V-cd vertical bar= 0.242 +/- 0.022(stat )+/- 0.006(syst) +/- 0.033(theory). | en_US |
| dc.fullTextLevel | Full Text | en_US |
| dc.identifier.doi | 10.1103/PhysRevLett.124.231801 | en_US |
| dc.identifier.issn | 1079-7114 | |
| dc.identifier.issn | 0031-9007 | |
| dc.identifier.pmid | 32603168 | en_US |
| dc.identifier.scopus | 2-s2.0-85087418506 | en_US |
| dc.identifier.uri | https://hdl.handle.net/11411/2663 | |
| dc.identifier.uri | https://doi.org/10.1103/PhysRevLett.124.231801 | |
| dc.identifier.wos | WOS:000538944400003 | en_US |
| dc.identifier.wosquality | Q1 | en_US |
| dc.indekslendigikaynak | Web of Science | en_US |
| dc.indekslendigikaynak | Scopus | en_US |
| dc.indekslendigikaynak | PubMed | en_US |
| dc.issue | 23 | 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 | Heavy | en_US |
| dc.subject | Semileptonic-B | en_US |
| dc.subject | E(+)E(-) | en_US |
| dc.title | First Observation of D+ -> eta mu(+)nu(mu) and Measurement of Its Decay Dynamics | en_US |
| dc.type | Article | en_US |
| dc.volume | 124 | en_US |
