R-parity Violating Radiative Photino Decay in Supersymmetric Models

Abstract

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.

Comments: Latex, 10 pages, No figure, (To appear in Phys. Rev. D)