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
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页码:243 / 254
页数:12
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