BaBar Collaboration (Including: Gershon, T. J., Harrison, P. F. and Latham, Thomas). (2013) Measurement of the B+→ωℓ+ν branching fraction with semileptonically tagged B mesons. Physical Review D - Particles, Fields, Gravitation and Cosmology , Volume 88 (Number 7). Article number 072006. doi:doi: 10.5606/tgkdc.dergisi.2013.6683 ISSN 1550-7998.

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Abstract

We 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)×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.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Physical Review D - Particles, Fields, Gravitation and Cosmology
Publisher:	American Physical Society
ISSN:	1550-7998
Official Date:	15 October 2013
Dates:	Date Event 15 October 2013 Published 13 August 2013 Submitted
Volume:	Volume 88
Number:	Number 7
Article Number:	Article number 072006
DOI:	doi: 10.5606/tgkdc.dergisi.2013.6683
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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