Session CA - Elementary Particles II.
INVITED session, Friday morning, November 15
Mary Gay D, Holiday Inn
We investigate the radiative decays of pseudoscalar (\pi, K,\eta,\eta'), vector(\rho, K^*, ømega, \phi) and axial vector (A_1) mesons using a simple relativistic constituent quark model. For both simplicity and relativity, we take advantage of the distinguished features in the light-cone quantization method; the Fock-state expansion of meson wavefunctions are not contaminated by the vacuum fluctuation, (2) the problem of assigning quantum numbers J^PC to mesons is circumvented by the Melosh transformation. Except the well-known constituent quark masses of (u,d,s) quarks and the spin-averaged meson masses, the only parameter in the model is the gaussian parameter \beta which determines the broadness( or sharpness) of radial wavefunction. Our overall predictions of pseudoscalar, vector and axial vector meson radiative decay processes are remarkably in good agreement with the experimental data.