Measurement of the B+ → ω ℓ⁺ ν Branching Fraction with Semileptonically Tagged B Mesons

dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.VIAF250674117 (Izen, JM)
dc.contributor.authorLees, J. P.en_US
dc.contributor.authorPoireau, V.en_US
dc.contributor.authorTisserand, V.en_US
dc.contributor.authorGrauges, E.en_US
dc.contributor.authorPalano, A.en_US
dc.contributor.authorEigen, G.en_US
dc.contributor.authorStugu, B.en_US
dc.contributor.authorLou, Xinchouen_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorBaBar Collaborationen_US
dc.contributor.utdAuthorLou, Xinchouen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.date.accessioned2014-07-31T19:12:20Z
dc.date.available2014-07-31T19:12:20Z
dc.date.created2013-10-15en_US
dc.date.issued2013-10-15en_US
dc.date.submitted2013-08-13en_US
dc.description.abstractWe report a measurement of the branching fraction of the exclusive charmless semileptonic decay B⁺ → ωℓ⁺ ν where ℓ is either an electron or a muon. We use samples of B⁺ mesons tagged by a reconstructed charmed semileptonic decay of the other B meson in the event. The measurement is based on a data set of 426.1 fb⁻¹ of e⁺e⁻ collisions at a center-of-mass energy of 10.58 GeV recorded with the BABAR detector at the PEP-II asymmetric-energy e⁺e⁻ storage rings. We measure a branching fraction of ℬ(B⁺ → ωℓ⁺ ν)=(1.35 ± 0.21 ± 0.11) x 10⁻⁴, where the uncertainties are statistical and systematic, respectively. We also present measurements of the partial branching fractions in three bins of q², the invariant-mass squared of the lepton-neutrino system, and we compare them to theoretical predictions of the form factors.en_US
dc.identifier.bibliographicCitationLees, J. P., V. Poireau, V. Tisserand, E. Grauges, et al. 2013. "Measurement of the B⁺ → ωℓ⁺ ν Branching Fraction with Semileptonically Tagged B Mesons." Physical Review D 88(7), doi:10.1103/PhysRevD.88.072006en_US
dc.identifier.issn1550-7998en_US
dc.identifier.issue7en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/3843
dc.identifier.volume88en_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevD.88.072006
dc.rights©2013 American Physical Societyen_US
dc.sourcePhysical Review D - Particles, Fields, Gravitation and Cosmology
dc.subjectBranching fractions (Nuclear physics)en_US
dc.subjectGigaelectronvolts (GeV)en_US
dc.subjectB mesonsen_US
dc.titleMeasurement of the B+ → ω ℓ⁺ ν Branching Fraction with Semileptonically Tagged B Mesonsen_US
dc.typeTexten_US
dc.type.genreArticleen_US

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