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Vertical bar V-ub vertical bar from exclusive semileptonic Beta ->pi decays revisited

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dc.contributor.author	Flynn, Jonathan M.
dc.contributor.author	Nieves Pamplona, Juan Miguel
dc.date.accessioned	2014-10-22T10:04:52Z
dc.date.available	2014-10-22T10:04:52Z
dc.date.issued	2007
dc.identifier.citation	Flynn, Jonathan M. Nieves Pamplona, Juan Miguel 2007 Vertical bar V-ub vertical bar from exclusive semileptonic Beta ->pi decays revisited Physical Review D 76 3 031302
dc.identifier.uri	http://hdl.handle.net/10550/39279
dc.description.abstract	We update the extraction of \|V-ub\| from exclusive semileptonic B ->pi decays, combining experimental partial branching fraction information with theoretical form-factor calculations, using the recently revised HPQCD results for the form factors f(+) and f(0). We use Omnes representations to provide the required parametrizations of the form factors. The extracted value is \|V-ub\|=(3.47 +/- 0.29 +/- 0.03)x10(-3), in striking agreement with \|V-ub\| extracted using all other inputs in CKM fits and showing some disagreement with \|V-ub\| extracted from inclusive semileptonic B ->pi decays.
dc.language.iso	eng
dc.relation.ispartof	Physical Review D, 2007, vol. 76, num. 3, p. 031302
dc.subject	Física
dc.title	Vertical bar V-ub vertical bar from exclusive semileptonic Beta ->pi decays revisited
dc.type	journal article	es_ES
dc.date.updated	2014-10-22T10:04:52Z
dc.identifier.doi	10.1103/PhysRevD.76.031302
dc.identifier.idgrec	068569
dc.rights.accessRights	open access	es_ES