Extracting |V_{ub}| from the Hadronic Mass Spectrum of Inclusive B decays

Abstract

Following a strategy introduced earlier by the authors, we show that it is possible to extract |V_{ub}| from the cut hadronic mass spectrum of B decays without large systematic errors which usually arise from having to model the Fermi motion of the heavy quark. We present a closed form expression for |V_{ub}|/|V_{ts}| which is accurate up to corrections of order α_s^2, α_s ρ, (Λ/m_b)^2/ρ, where ρis the experimental cut (s_c/m_b^2) on the hadronic mass used to veto charmed decays. Modulo duality violation errors, which are intrinsic to all inclusive predictions, we estimate the theoretical error in the extraction to be at the 5% level.

arXiv comment11 pages, 1 figure

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Cited by in corpus (26)

• Summing Sudakov logarithms in B -> X_s + gamma in effective field theory
• Treating the b quark distribution function with reliable uncertainties
• Theory of Charmless Inclusive B Decays and the Extraction of V_{ub}
• Inclusive semileptonic B decays and the determination of |V_ub|
• Quark Fragmentation within an Identified Jet
• Precision determination of |V_{ub}| from inclusive decays
• Factorization for Power Corrections to B->Xs gamma and B-> Xu e nu
• New Physics at a Super Flavor Factory
• Inclusive Measure of |V_ub| with the Analytic Coupling Model
• Enhanced subleading structure functions in semileptonic B decay
• Light-cone distribution functions for B decays at subleading order in 1/mb
• Determinations of |Vub| from Inclusive Semileptonic B Decays with Reduced Model Dependence
• A Comment on the Extractions of V_{ub} from Radiative Decays
• A two-loop relation between inclusive radiative and semileptonic B-decay spectra
• Subleading shape function contributions to the hadronic invariant mass spectrum in B -> X_u l νdecay
• Experimental Limits on Weak Annihilation Contributions to b -->u ell nu Decay
• A new model-independent way of extracting |V_ub/V_cb|
• Shape-function independent relations of charmless inclusive B-decay spectra
• Reducing theoretical uncertainties in mb and lambda1
• Determination of V_ub from semileptonic B decays
• Subleading Shape-Function Effects and the Extraction of |V_ub|
• Precision Determination of $|V_{ub}|$
• Determination of |Vub|
• Inclusive semileptonic decays of the B meson
• Review of Recent Measurements of the Sides of the CKM Unitarity Triangle
• High order perturbative corrections to the determination of |Vub| from the P+ spectrum in B -> Xu l nu