Study of exclusive charmless semileptonic B decays and extraction of |Vub| at CLEO

D. M. Asner et al. (CLEO Collaboration)
Phys. Rev. D 76, 012007 – Published 31 July 2007; Erratum Phys. Rev. D 76, 039901 (2007)

Abstract

We have studied semileptonic B decay to the exclusive charmless states π, ρ/ω, η and η using the full 15.5fb1 CLEO Υ(4S) sample, with measurements performed in subregions of phase space to minimize dependence on a priori knowledge of the form factors involved. We find total branching fractions B(B0π+ν)=(1.37±0.15stat±0.11sys)×104 and B(B0ρ+ν)=(2.93±0.37stat±0.37sys)×104. We find evidence for B+η+ν, with B(B+η+ν)=(2.66±±0.80stat±0.56sys)×104 and 1.20×104<B(B+η+ν)<4.46×104 (90% CL). We also limit B(B+η+ν)<1.01×104 (90% CL). By combining our Bπν information with unquenched lattice calculations, we find |Vub|=(3.6±0.4stat±0.2sys0.4thy+0.6)×103.

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  • Received 23 March 2007
  • Publisher error corrected 6 August 2007

DOI:https://doi.org/10.1103/PhysRevD.76.012007

©2007 American Physical Society

Corrections

6 August 2007

Erratum

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Vol. 76, Iss. 1 — 1 July 2007

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