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Measurement of the B+ -> omega l(+) nu branching fraction with semileptonically tagged B mesons

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Measurement of the B+ -> omega l(+) nu branching fraction with semileptonically tagged B mesons

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dc.contributor.author BABAR Collaboration
dc.contributor.author Martínez Vidal, Fernando
dc.contributor.author Oyanguren Campos, Arantza
dc.contributor.author Villanueva Pérez, Pablo
dc.date.accessioned 2014-04-01T11:57:40Z
dc.date.available 2014-04-01T11:57:40Z
dc.date.issued 2013
dc.identifier.citation BABAR Collaboration Martínez Vidal, Fernando Oyanguren Campos, Arantza Villanueva Pérez, Pablo 2013 Measurement of the B+ -> omega l(+) nu branching fraction with semileptonically tagged B mesons Physical Review D 88 7 072006-1 072006-8
dc.identifier.uri http://hdl.handle.net/10550/33952
dc.description.abstract We report a measurement of the branching fraction of the exclusive charmless semileptonic decay B+ -> omega l(+) nu, where l is either an electron or amuon. 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+ -> omega l(+) nu) = (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 q(2), the invariant-mass squared of the lepton-neutrino system, and we compare them to theoretical predictions of the form factors.
dc.relation.ispartof Physical Review D, 2013, vol. 88, num. 7, p. 072006-1-072006-8
dc.subject Física nuclear
dc.title Measurement of the B+ -> omega l(+) nu branching fraction with semileptonically tagged B mesons
dc.type journal article es_ES
dc.date.updated 2014-04-01T11:57:40Z
dc.identifier.doi 10.1103/PhysRevD.88.072006
dc.identifier.idgrec 093363
dc.rights.accessRights open access es_ES
dc.identifier.url 10.1103/PhysRevD.88.072006

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