Subleading Shape-Function Effects and the Extraction of |V_ub|

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dc.creatorLee, Keith S. M.
dc.date2008-02-07
dc.date2008-12-16
dc.date.accessioned2026-07-07T12:12:34Z
dc.date.available2026-07-07T12:12:34Z
dc.descriptionWe derive a class of formulae relating moments of B -> Xu l nu to B -> Xs gamma in the shape function region, where m_X^2 ~ m_b Lambda_QCD. We also derive an analogous class of formulae involving the decay B -> Xs l+ l-. These results incorporate Lambda_QCD/m_b power corrections, but are independent of leading and subleading hadronic shape functions. Consequently, they enable one to determine |V_ub|/|V_tb V_ts*| to subleading order in a model-independent way.
dc.description23 pages
dc.identifierhttps://arxiv.org/abs/0802.0873
dc.identifierhttp://arxiv.org/abs/0802.0873
dc.identifierPhys.Rev.D78:013002,2008
dc.identifierdoi:10.1103/PhysRevD.78.013002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/210587
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleSubleading Shape-Function Effects and the Extraction of |V_ub|
dc.typetext

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