%0 Journal Article
%T Measurement of the B+ -> omega l(+) nu branching fraction with semileptonically tagged B mesons
%A BABAR Collaboration (Lees, J. P. et al
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Villanueva-Perez, P.
%J Physical Review D
%D 2013
%V 88
%N 7
%I Amer Physical Soc
%@ 1550-7998
%G English
%F BABARCollaborationLees_etal2013
%O WOS:000326099800002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1631), last updated on Thu, 21 Nov 2013 19:03:46 +0000
%X 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.
%R 10.1103/PhysRevD.88.072006
%U http://arxiv.org/abs/1308.2589
%U https://doi.org/10.1103/PhysRevD.88.072006
%P 072006-8pp