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

Autor(en)

Yu-Ming Wang

Abstrakt

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 ->pi 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 ->pi form factors are further addressed with a particular attention to the extraction of the CKM matrix element vertical bar V-ub vertical bar.

Organisation(en)

Teilchenphysik

Externe Organisation(en)

Nankai University

Anzahl der Seiten

6

DOI

https://doi.org/10.1051/epjconf/201612900027

Publikationsdatum

2016

Peer-reviewed

Ja

ÖFOS 2012

103024 Quantenfeldtheorie, 103034 Teilchenphysik

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/7a216b38-c5b3-434c-9472-28c725683ffa