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Branching fraction measurement of B+ -> omega l(+)nu decays

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dc.contributor.author	BABAR Collaboration
dc.contributor.author	Martínez Vidal, Fernando
dc.contributor.author	Oyanguren Campos, Arantza
dc.date.accessioned	2014-04-01T09:05:04Z
dc.date.available	2014-04-01T09:05:04Z
dc.date.issued	2013
dc.identifier.citation	BABAR Collaboration Martínez Vidal, Fernando Oyanguren Campos, Arantza 2013 Branching fraction measurement of B+ -> omega l(+)nu decays Physical Review D 87 3 032004-1 032004-11
dc.identifier.uri	http://hdl.handle.net/10550/33917
dc.description.abstract	We present a measurement of the B+ -> omega l(+)nu branching fraction based on a sample of 467 million B (B) over bar pairs recorded by the BABAR detector at the SLAC PEP-II e(+)e(-) collider. We observe 1125 +/- 131 signal decays, corresponding to a branching fraction of B(B+ -> omega l(+)nu) = (1.21 +/- 0.14 +/- 0.08) x 10(-4), where the first error is statistical and the second is systematic. The dependence of the decay rate on q(2), the invariant mass squared of the leptons, is compared to QCD predictions of the form factors based on a quark model and light-cone sum rules.
dc.relation.ispartof	Physical Review D, 2013, vol. 87, num. 3, p. 032004-1-032004-11
dc.subject	Física nuclear
dc.title	Branching fraction measurement of B+ -> omega l(+)nu decays
dc.type	journal article	es_ES
dc.date.updated	2014-04-01T09:05:04Z
dc.identifier.doi	10.1103/PhysRevD.87.032004
dc.identifier.idgrec	084159
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1103/PhysRevD.87.032004