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arXiv · 1401.6707

Predicting B->K* form factors in light-cone QCD

M. Ahmady·R. Campbell·S. Lord·R. Sandapen
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Abstract

We use QCD light-cone sum rules with holographic anti de Sitter/Chromodynamics (AdS/QCD) Distribution Amplitudes (DAs) for the $K^*$ meson in order to predict the full set of seven $B \to K^*$ transition form factors for intermediate-to-high recoil of the vector meson. We provide simple parametrizations for the form factors that fit our AdS/QCD predictions. We also provide parametrizations that fit both our AdS/QCD predictions and the most recent lattice data for low recoil. We use our form factors to predict the differential and total branching fraction of the rare dileptonic decay $B \to K^* μ^+ μ^-$ which we compare to the recent LHCb data.

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M. Ahmady, R. Campbell, S. Lord, R. Sandapen. 2014-01-26. Predicting B->K* form factors in light-cone QCD. https://doi.org/10.1103/physrevd.89.074021

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