Dispersive approach to semileptonic form factors in heavy-to-light meson decays

被引：28

作者：

Burdman, G

Kambor, J

机构：

[1] FERMILAB NATL ACCELERATOR LAB, BATAVIA, IL 60510 USA

[2] INST PHYS NUCL, DIV PHYS THEOR, F-91406 ORSAY, FRANCE

来源：

PHYSICAL REVIEW D | 1997年 / 55卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.55.2817

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the semileptonic decays of heavy mesons into light pseudoscalars by making use of dispersion relations. Constraints from heavy quark symmetry, chiral symmetry, and perturbative QCD are implemented into a dispersive model for the form factors. Large deviations from B*-pole dominance are observed in B-->pi/nu. We discuss the model prediction for this mode and its possible impact on the extraction of \V-ub\.

引用

页码：2817 / 2826

页数：10

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