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. GignouxInstitut 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.
14.40.-n - Mesons.
13.40.Hq - Electromagnetic decays.
12.39.Jh - Nonrelativistic quark model.
© Società Italiana di Fisica, Springer-Verlag 2002