Bounds on R-parity violating SUSY Yukawa couplings from semileptonic   decays of baryons
  We consider tree-level corrections to hypercharge changing semileptonic decays of certain baryons induced by a minimal supersymmetric standard model with explicitly broken R-parity via $L$-violation. This study leads to a new set of constraints on the products of couplings arising from the LQd$^c$ operator of the superpotential. 
Farida Tahir, M. Sadiq, M. Anwar Mughal and K. Ahmed (Quaid-i-Azam   University, Islamabad, Pakistan)