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Measurement of the B^+ → omegal^+nu and B^+ → etal^+nu branching fractions (2009)

Abstract

We present a study of the charmless semileptonic B-meson decays B^+ → omega[script-l]^+nu and B^+ → eta[script-l]^+nu. The analysis is based on 3.83×10^8 B[overline B] pairs recorded at the Y(4S) resonance with the BABAR detector. The omega mesons are reconstructed in the channel omega → pi^+pi^-pi^0 and the eta mesons in the channels eta → pi^+pi^-pi^0 and eta → gammagamma. We measure the branching fractions [script B](B^+ → omega[script-l]^+nu)= (1.14±0.16_(stat)±0.08_(syst))×10^(-4) and [script B](B^+ → eta[script-l]^+nu)=(0.31±0.06_(stat)±0.08_(syst))×10^(-4).

Publication details

Download	http://authors.library.caltech.edu/16474/1/Aubert2009p1641Phys_Rev_D.pdf http://resolver.caltech.edu/CaltechAUTHORS:20091026-110337182
Publisher	American Physical Society
Repository	Caltech Authors (United States)
Type	Article, PeerReviewed
Relation	http://resolver.caltech.edu/CaltechAUTHORS:20091026-110337182 http://authors.library.caltech.edu/16474/