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
ub|.
- 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://ucris.univie.ac.at/portal/en/publications/factorization-resummation-and-sum-rules-for-heavytolight-form-factors(7a216b38-c5b3-434c-9472-28c725683ffa).html