Factorization, resummation and sum rules for heavy-to-light form factors

Author(s)
Yu-Ming Wang
Abstract

Precision calculations of heavy-to-light form factors are essential to sharpen our understanding towards the strong interaction dynamics of the heavy-quark system and to shed light on a coherent solution of flavor anomalies. We briefly review factorization properties of heavy-to-light form factors in the framework of QCD factorization in the heavy quark limit and discuss the recent progress on the QCD calculation of B → π form factors from the light-cone sum rules with the B-meson distribution amplitudes. Demonstration of QCD factorization for the vacuum-to-B-meson correlation function used in the sum-rule construction and resummation of large logarithms in the short-distance functions entering the factorization theorem are presented in detail. Phenomenological implications of the newly derived sum rules for B → π form factors are further addressed with a particular attention to the extraction of the CKM matrix element |V

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Organisation(s)
Particle Physics
External organisation(s)
Nankai University
No. of pages
6
DOI
https://doi.org/10.1051/epjconf/201612900027
Publication date
2016
Peer reviewed
Yes
Austrian Fields of Science 2012
103024 Quantum field theory, 103034 Particle physics
ASJC Scopus subject areas
Physics and Astronomy(all)
Portal url
https://ucrisportal.univie.ac.at/en/publications/factorization-resummation-and-sum-rules-for-heavytolight-form-factors(7a216b38-c5b3-434c-9472-28c725683ffa).html