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SU(3) breaking in $\overline{B}$/D --> Kl$\overline{\nu}$ decays and value of V$_{cd}$/V$_{cs}$

We determine the SU(3)-breaking effects in the \bar{B}/D \rar Kl\bar \nu decays from the ratio of the \bar{B}/D\rar Kl\bar \nu over the \bar{B}/D \rar \pi l\bar \nu semileptonic form factors using a {\it semi-analytic} expression based on QCD spectral sum rules. We obtain f_+^{\bar{B}\rar K}(0)/f_+^...

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Detalles Bibliográficos
Autor principal: Narison, Stéphan
Lenguaje:eng
Publicado: 1994
Materias:
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(94)91462-1
http://cds.cern.ch/record/267407