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B_{d,s}->rho, omega, K*, phi Decay Form Factors from Light-Cone Sum Rules Revisited

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arxiv hep-ph/0412079 v1 pith:APJASGU5 submitted 2004-12-06 hep-ph

Patricia Ball , Roman Zwicky This is my paper · ORCID
classification hep-ph
keywords factorsformcorrectionsdependenceimprovedlight-coneparametersresults
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We present an improved calculation of $B\to$ light vector form factors from light-cone sum rules, including one-loop radiative corrections to twist-2 and twist-3 contributions, and leading order twist-4 corrections. The total theoretical uncertainty of our results at zero momentum transfer is typically 10% and can be improved, at least in part, by reducing the uncertainty of hadronic input parameters. We present our results in a way which details the dependence of the form factors on these parameters and facilitates the incorporation of future updates of their values from e.g. lattice calculations. We also give simple and easy-to-inplement parametrizations of the $q^2$-dependence of the form factors which are valid in the full kinematical regime of $q^2$.

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Cited by 18 Pith papers

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