Exclusive semileptonic b → uℓν decays at CLEO

Research output: Contribution to conferencePaper

Abstract

Updated CLEO results are presented for branching ratios and four-momentum transfer, q2, dependence of exclusive charmless semileptonic B decays, where the final state hadron is either a π, ρ, ω, η or η′. These results have comparable accuracies with those of other experiments. We address the issue of flavor singlet couplings by limiting Γ(B+ → η′ℓ+ν)/Γ(B + → ηℓ+ν) > 2.5 at 90% CL. We also extract a value of |Vub| = (4.3 ± 0.4 ± 0.2-0.4 +0.6) ×10-3 in one particular unquenched lattice QCD model using πℓ+ν data above q2 of 16 GeV 2.

Original languageEnglish (US)
StatePublished - Dec 1 2006
Event4th International Workshop on the CKM Unitarity Triangle, CKM 2006 - Nagoya, Japan
Duration: Dec 12 2006Dec 16 2006

Other

Other4th International Workshop on the CKM Unitarity Triangle, CKM 2006
CountryJapan
CityNagoya
Period12/12/0612/16/06

ASJC Scopus subject areas

  • Mathematics (miscellaneous)

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  • Cite this

    Stone, S. (2006). Exclusive semileptonic b → uℓν decays at CLEO. Paper presented at 4th International Workshop on the CKM Unitarity Triangle, CKM 2006, Nagoya, Japan.