Constituent quark-meson model for heavy-meson processes

被引：84

作者：

Deandrea, A

Di Bartolomeo, N

Gatto, R

Nardulli, G

Polosa, AD

机构：

[1] CNRS, Ctr Phys Theor, F-13288 Marseille, France

[2] SISSA, I-34014 Trieste, Italy

[3] Univ Geneva, Dept Phys Theor, CH-1211 Geneva, Switzerland

[4] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy

[5] Ist Nazl Fis Nucl, I-70126 Bari, Italy

来源：

PHYSICAL REVIEW D | 1998年 / 58卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.58.034004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe the effective heavy meson Lagrangian for S- and P-wave heavy-light mesons in terms of a model based on meson-quark interactions, where mesonic transition amplitudes are represented by diagrams with heavy mesons attached to loops containing heavy and light constituent quarks. The model is relativistic and incorporates the heavy quark symmetries. The universal form factors of the heavy meson transition amplitudes are calculated together with their slopes and compared to existing data and limits. As further applications of the model, strong and radiative decays of D* and B* are considered. The agreement with data is surprisingly good and shows that the model offers a viable alternative to effective meson Lagrangians which require a larger number of input parameters. [S0556-2821(98)02415-1]

引用

页码：0340041 / 03400412

页数：12

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