Eur. Phys. J. A 13, 363-376 (2002)

Radiative transitions in mesons in a non-relativistic quark model

R. Bonnaz, B. Silvestre-Brac and C. Gignoux

Institut des Sciences Nucléaires, 53 Av. des Martyrs, F-38026 Grenoble Cedex, France

silvestre@isn.in2p3.fr

(Received: 16 October 2001 / Revised version: 10 December 2001 Communicated by P. Schuck)

Abstract
In the framework of the non-relativistic quark model, an exhaustive study of radiative transitions in mesons is performed. Emphasis is placed on several points. Some traditional approximations (long-wavelength limit, non-relativistic phase space, dipole approximation for E1 transitions, Gaussian wave functions) are analyzed and their effects commented. A complete treatment using three different types of realistic quark-antiquark potential is made. The overall agreement with experimental data is quite good, but some improvements are suggested.

PACS
14.40.-n - Mesons.
13.40.Hq - Electromagnetic decays.
12.39.Jh - Nonrelativistic quark model.

© Società Italiana di Fisica, Springer-Verlag 2002