RADIATIVE DECAYS OF EQUAL MASS VECTOR MESONS IN A BETHE-SALPETER EQUATION FRAMEWORK.

In this work, we have employed Bethe-Salpeter equation (BSE) under Covariant In-stantaneous Ansatz (CIA) to study radiative decays of light vector mesons through the process: h → h′ γ, taking h and h′ as equal mass light vector and pseudoscalar mesons, respectively. The decay widths calculated for these processes are in reasonable agree-ment with data. The motivation for this work was our intention to resolve the problems involved in calculations of triangle quark-loop diagrams which appear in processes such as radiative meson decays, meson form factors, strong decays of mesons, etc., in BSE un-der CIA, which give rise to complexities in amplitudes (as pointed out earlier in Ref. 1) due to the presence of the time-like momentum components in Gaussian factors asso-ciated with the vertex functions of the participating hadrons. In this work we try to highlight this problem and then demonstrate a mathematical procedure which might lead to calculations of such processes in BSE under CIA. [ABSTRACT FROM AUTHOR]