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Extracting vertical bar V-ub vertical bar from B ->pi l nu decays using a multiply-subtracted Omnes dispersion relation

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dc.contributor.author	Flynn, Jonathan M.
dc.contributor.author	Nieves Pamplona, Juan Miguel
dc.date.accessioned	2014-10-22T10:38:22Z
dc.date.available	2014-10-22T10:38:22Z
dc.date.issued	2007
dc.identifier.uri	http://hdl.handle.net/10550/39283
dc.description.abstract	We use a multiply-subtracted Omnes dispersion relation for the form factor f(+) in B ->pi semileptonic decay, allowing the direct input of experimental and theoretical information to constrain its dependence on q(2), thereby improving the precision of the extracted value of vertical bar V-ub vertical bar. Apart from these inputs we use only unitarity and analyticity properties. We obtain vertical bar V-ub vertical bar=(4.02 +/- 0.35)x10(-3), improving the agreement with the value determined from inclusive methods, and competitive in precision with them.
dc.language.iso	eng
dc.relation.ispartof	Physical Review D, 2007, vol. 75, num. 1, p. 013008
dc.source	Flynn, Jonathan M. Nieves Pamplona, Juan Miguel 2007 Extracting vertical bar V-ub vertical bar from B ->pi l nu decays using a multiply-subtracted Omnes dispersion relation Physical Review D 75 1 013008
dc.subject	Física
dc.title	Extracting vertical bar V-ub vertical bar from B ->pi l nu decays using a multiply-subtracted Omnes dispersion relation
dc.type	journal article	es_ES
dc.date.updated	2014-10-22T10:38:23Z
dc.identifier.doi	http://dx.doi.org/10.1103/PhysRevD.75.013008
dc.identifier.idgrec	068575
dc.rights.accessRights	open access	es_ES