TY  - JOUR
AU  - BABAR Collaboration (Lees, J. P. et al
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Villanueva-Perez, P.
PY  - 2013
DA  - 2013//
TI  - Measurement of the B+ -> omega l(+) nu branching fraction with semileptonically tagged B mesons
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 072006
EP  - 8pp
VL  - 88
IS  - 7
PB  - Amer Physical Soc
AB  - 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.
SN  - 1550-7998
UR  - http://arxiv.org/abs/1308.2589
UR  - https://doi.org/10.1103/PhysRevD.88.072006
DO  - 10.1103/PhysRevD.88.072006
LA  - English
N1  - WOS:000326099800002
ID  - BABARCollaborationLees_etal2013
ER  -