LEPTON-NUMBER-VIOLATING RADIATIVE W-DECAY IN MODELS WITH R-PARITY VIOLATION

Models with explicit R-parity violation can induce new rare radiative decay modes of the W boson into single supersymmetric particles which also violate lepton number. We examine the rate and signature for one such decay, W-lgamma, and find that such a mode will be very difficult to observe, due to its small branching fraction, even if the lepton-n umber-violating coupling in the superpotential is comparable in streng th to electromagnetism. The reason for this small rate is primarily du e to the helicity suppression of the amplitude that results from the f orm of the allowed R-parity-violating couplings in this class of model s.