  It has been shown that unless the tri-linear R-parity violating coupling
$\lambda_{i33}$ (i = 1, 2) is small enough ($\lambda_{i33}<$ ${10}^{-2}$ for
MSSM and ${10}^{-3}$ for GMSB model),the partial decay width of photino
decaying into 'photon + $\nu_{e,\mu}$', both in supergravity motivated (MSSM)
and gauge mediated (GMSB) supersymmetric models are larger than the partial
decay width of photino decaying into 'photon + goldstino' in R-parity
conserving GMSB model including one loop supersymmetric QED correction.
