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Lattice-constrained parametrizations of form factors for semileptonic and rare radiative B decays

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Lattice-constrained parametrizations of form factors for semileptonic and rare radiative B decays

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dc.contributor.author Del Debbio, Luigi
dc.contributor.author Flynn, Jonathan M.
dc.contributor.author Lellouch, Laurent
dc.contributor.author Nieves Pamplona, Juan Miguel
dc.date.accessioned 2014-10-16T12:25:20Z
dc.date.available 2014-10-16T12:25:20Z
dc.date.issued 1998
dc.identifier.citation Del Debbio, Luigi Flynn, Jonathan M. Lellouch, Laurent Nieves Pamplona, Juan Miguel 1998 Lattice-constrained parametrizations of form factors for semileptonic and rare radiative B decays Physics Letters B 416 3-4 392 401
dc.identifier.uri http://hdl.handle.net/10550/39223
dc.description.abstract We describe all the form factors for semileptonic and radiative B decays to the same light vector meson with just two parameters and the two form factors for semileptonic B decays to a light pseudoscalar meson with a further two or three parameters. This provides simple parametrizations of the form factors for the physical <(B)over bar (0)> --> <rho(+)l(-)(v)over bar (l)>, <(B)over bar (0)> --> <pi(+)l(-)(v)over bar (l)> and (B) over bar --> K*gamma decays. The parametrizations are consistent with heavy quark symmetry, kinematic constraints and lattice results, which we use to determine the parameters. In addition, we test versions of the parametrizations consistent (or not) with light-cone sum rule scaling relations at q(2) = 0.
dc.language.iso eng
dc.relation.ispartof Physics Letters B, 1998, vol. 416, num. 3-4, p. 392-401
dc.subject Física
dc.title Lattice-constrained parametrizations of form factors for semileptonic and rare radiative B decays
dc.type journal article es_ES
dc.date.updated 2014-10-16T12:25:20Z
dc.identifier.doi 10.1016/S0370-2693(97)01350-6
dc.identifier.idgrec 068611
dc.rights.accessRights open access es_ES

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