Light-Cone Sum Rules for $B\to K\pi$ Form Factors and Applications to Rare Decays

@article{DescotesGenon2019LightConeSR,
  title={Light-Cone Sum Rules for \$B\to K\pi\$ Form Factors and Applications to Rare Decays},
  author={S. Descotes-Genon and A. Khodjamirian and Javier Virto},
  journal={arXiv: High Energy Physics - Phenomenology},
  year={2019}
}
  • S. Descotes-Genon, A. Khodjamirian, Javier Virto
  • Published 2019
  • Physics
  • arXiv: High Energy Physics - Phenomenology
  • We derive a set of light-cone sum rules relating the hadronic form factors relevant for $B\to K\pi\ell^+\ell^-$ decays to the $B$-meson light-cone distribution amplitudes (LCDAs). We obtain the sum rule relations for all $B\to K\pi$ form factors of (axial)vector and (pseudo)tensor $b\to s$ currents with a $P$-wave $K\pi$ system. Our results reduce to the known light-cone sum rules for $B\to K^*$ form factors in the limit of a single narrow-width resonance. We update the operator-product… CONTINUE READING
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