Radiative corrections to the decay B→πeν and the heavy quark limit

被引：121

作者：

Bagan, E ^{[1
]}

Ball, P

Braun, VM

机构：

[1] Autonomous Univ Barcelona, Dept Fis, Fis Teor Grp, E-08193 Bellaterra, Spain

[2] Autonomous Univ Barcelona, Inst Fis Altes Energies, E-08193 Bellaterra, Spain

[3] Fermi Natl Accelerator Lab, Batavia, IL 60510 USA

[4] NORDITA, DK-2100 Copenhagen, Denmark

来源：

PHYSICS LETTERS B | 1998年 / 417卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(97)01371-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate radiative corrections to the light-cone sum rule for the semileptonic form factor in B --> pi ev decays and thus remove the major uncertainty in determining the CKM mixing angle \V-ub\ by this method. We discuss the remaining uncertainties and perspectives for further studies. The structure of the radiative corrections suggests factorization of soft (end-point) and hard rescattering contributions in heavy-to-light decays in the heavy quark limit. (C) 1998 Elsevier Science B.V.

引用

页码：154 / 162

页数：9

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