Semileptonic decays of charmed mesons in the effective action of QCD

被引：24
|
作者：
Amorós, G
Noguera, S
Portolés, J
机构：
[1] Univ Valencia, CSIC, IFIC, Dept Fis Teor, Valencia 46071, Spain
[2] Univ Valencia, Dept Fis Teor, Burjassot 46100, Spain
来源：
EUROPEAN PHYSICAL JOURNAL C | 2003年 / 27卷 / 02期
关键词：
D O I：
10.1140/epjc/s2002-01116-0
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Within the framework of phenomenological Lagrangians we construct the effective action of QCD relevant for the study of semileptonic decays of charmed mesons. Hence we evaluate the form factors of D --> P(0(-))l(+) v(l) at leading order in the 1/N-C expansion and, by demanding their QCD-ruled asymptotic behavior, we constrain the couplings of the Lagrangian. The features of the model-independent parameterization of form factors are provided, and their relevance for the analysis of experimental data are pointed out.
引用
收藏
页码：243 / 254
页数：12
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