Measurement of the Form Factors in the Decay D⁺ → ωe⁺ν_e and Search for the Decay D⁺ → φe⁺ν_e.

dc.contributor.authorAblikim, M.en_US
dc.contributor.authorAchasov, M. N.en_US
dc.contributor.authorAi, X. C.en_US
dc.contributor.authorAlbayrak, O.en_US
dc.contributor.authorAlbrecht, M.en_US
dc.contributor.authorAmbrose, D. J.en_US
dc.contributor.authorAmoroso, A.en_US
dc.contributor.authorLou, Xinchouen_US
dc.contributor.authorBESIII Collaborationen_US
dc.contributor.utdAuthorLou, Xinchouen_US
dc.creatorSchool of Natural Sciences and Mathematicsen_US
dc.date.accessioned2016-07-01T14:37:45Z
dc.date.available2016-07-01T14:37:45Z
dc.date.created2015-10-19en_US
dc.date.issued2015-10-19en_US
dc.description.abstractUsing 2.92 fb⁻¹ of electron-positron annihilation data collected at a center-of-mass energy of √s = 3.773 GeV with the BESIII detector, we present an improved measurement of the branching fraction ℬ(D⁺ → ωe⁺ν_e) = (1.63 ± 0.11 ± 0.08) x 10⁻³. The parameters defining the corresponding hadronic form factor ratios at zero momentum transfer are determined for the first time; we measure them to be r_V = 1.24 ± 0.09 ± 0.06 and r_2 = 1.06 ± 0.15 ± 0.05. The first and second uncertainties are statistical and systematic, respectively. We also search for the decay D⁺ → ωe⁺ν_e. An improved upper limit ℬ(D⁺ → φe⁺ν_e < 1.3 x 10⁻⁵ is set at 90% confidence level.en_US
dc.identifier.bibliographicCitationAblikim, M., M. N. Achasov, X. C. Ai, O. Albayrak, et al. 2015. "Measurement of the form factors in the decay D⁺ → ωe⁺ν_e and search for the decay D⁺ → φe⁺ν_e." Physical Review D 92(7), doi:10.1103/PhysRevD.92.071101.en_US
dc.identifier.issn1550-7998en_US
dc.identifier.issue7en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/4857
dc.identifier.volume92en_US
dc.language.isoenen_US
dc.publisherAmer Physical Socen_US
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevD.92.071101
dc.rights©2015 American Physical Societyen_US
dc.sourcePhysical Review D
dc.subjectSemileptonic decaysen_US
dc.subjectUncertaintyen_US
dc.subjectAtomic massen_US
dc.subjectBranching fractions (Nuclear physics)en_US
dc.subjectMesonsen_US
dc.titleMeasurement of the Form Factors in the Decay D⁺ → ωe⁺ν_e and Search for the Decay D⁺ → φe⁺ν_e.en_US
dc.type.genrearticleen_US

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