Measurement of the Branching Fraction For the Semileptonic Decay D0(+) -> pi(-(0))mu(+)nu(mu) and Test of Lepton Flavor Universality

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dc.WoS.categoriesPhysics, Multidisciplinaryen_US
dc.authorid0000-0001-5050-8441en_US
dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2020-06-05T09:27:00Z
dc.date.available2020-06-05T09:27:00Z
dc.date.issued2018-10-26
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractUsing a data sample corresponding to an integrated luminosity of 2.93 fb(-1) taken at a center-of-mass energy of 3.773 GeV with the BESIII detector operated at the BEPCII collider, we perform an analysis of the semileptonic decays D0(+) -> pi(-(0))mu(+)nu(mu) . The branching fractions of D-0 -> pi(-)mu(+)nu(mu), and D+ -> pi(0)mu(+)nu(mu) are measured to be (0.272 +/- 0.008(start) +/- 0.006(syst))% and (0.350 +/- 0.011(star) +/- 0.010(syst))%, respectively, where the former is of much improved precision compared to previous results and the latter is determined for the first time. Using these results along with previous BESIII measurements of D0(+) -> pi(-(0))e(+)nu(e), we calculate the branching fraction ratios to be R-0 BD0 -> pi(-)mu(+)nu mu BD0 -> pi(-)e(+)nu e=0.922 +/- 0.030(start) +/- 0.022(syst) and R+ BD+ -> pi(0)mu(+)nu mu/BD+ -> pi(0)e(+)nu e= 0.964 +/- 0.037(start) +/- 0.026(syst), which arc compatible with the theoretical expectation of lepton flavor universality within 1.7 sigma and 0.5 sigma, respectively. We also examine the branching fraction ratios in different four-momentum transfer square regions, and find no significant deviations from the standard model predictions.en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1103/PhysRevLett.121.171803en_US
dc.identifier.issn1079-7114
dc.identifier.issn0031-9007
dc.identifier.pmid30411926en_US
dc.identifier.scopus2-s2.0-85055696749en_US
dc.identifier.urihttps://hdl.handle.net/11411/2163
dc.identifier.urihttps://doi.org/10.1103/PhysRevLett.121.171803
dc.identifier.wosWOS:000448463300006en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.issue17en_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors500+en_US
dc.publisherAMER PHYSICAL SOCen_US
dc.relation.ispartofPHYSICAL REVIEW LETTERSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectRADIATIVE-CORRECTIONSen_US
dc.subjectCROSS-SECTIONen_US
dc.titleMeasurement of the Branching Fraction For the Semileptonic Decay D0(+) -> pi(-(0))mu(+)nu(mu) and Test of Lepton Flavor Universalityen_US
dc.typeArticleen_US
dc.volume121en_US

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