Inclusive semileptonic B decays and the determination of |V_ub|

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dc.creatorGambino, P.
dc.creatorGiordano, P.
dc.creatorOssola, G.
dc.creatorUraltsev, N.
dc.date2007-07-17
dc.date2007-10-18
dc.date.accessioned2026-07-07T12:42:22Z
dc.date.available2026-07-07T12:42:22Z
dc.descriptionWe study the triple differential distribution of B-> Xu l nu, consistently including all perturbative and non-perturbative effects through O(alphas^2 beta_0) and O(1/mb^3). The Fermi motion is parameterized in terms of a single light-cone function for each structure function and for any value of q^2, accounting for all subleading effects. We discuss the problems and uncertainties related to the high-q^2 tail and to Weak Annihilation effects. We work in the kinetic scheme, a framework characterized by a Wilsonian treatment with a hard cutoff mu ~ 1GeV. Our method is illustrated with the extraction of |V_ub| from some of the latest experimental data, providing a detailed estimate of the theoretical uncertainty.
dc.description35 pages, 15 figures; v2: improved presentation, updated exp inputs, version published in JHEP
dc.identifierhttps://arxiv.org/abs/0707.2493
dc.identifierhttp://arxiv.org/abs/0707.2493
dc.identifierJHEP 0710:058,2007
dc.identifierdoi:10.1088/1126-6708/2007/10/058
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220056
dc.subjectHigh Energy Physics - Phenomenology
dc.titleInclusive semileptonic B decays and the determination of |V_ub|
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