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arXiv · 1312.3087

Generalized Heavy-to-Light Form Factors in Light-Cone Sum Rules

Ulf-G. Meißner·Wei Wang
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Abstract

We study the form factors for a heavy meson into the S-wave $Kπ/ππ$ system with an invariant mass below 1~GeV. The mesonic final state interactions are described in terms of the scalar form factors, which are obtained from unitarized chiral perturbation theory. Employing generalized light-cone distribution amplitudes, we compute the heavy-to-light transition using light-cone sum rules. Our approach simultaneously respects constraints from analyticity and unitarity, and also takes advantage of the power expansion in the $1/m_b$ and the strong coupling constant.

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Ulf-G. Meißner, Wei Wang. 2014-02-05. Generalized Heavy-to-Light Form Factors in Light-Cone Sum Rules. https://doi.org/10.1016/j.physletb.2014.02.009

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