Constraints on R-parity violating supersymmetry from leptonic and   semileptonic tau, B_d and B_s decays
  We put constraints on several products of R-parity violating lambda lambda' and lambda' lambda' type couplings from leptonic and semileptonic tau, B_d and B_s decays. Most of them are one to two orders of magnitude better than the existing bounds, and almost free from theoretical uncertainties. A significant improvement of these bounds can be made in high luminosity tau-charm or B factories. 
Jyoti Prasad Saha and Anirban Kundu (Jadavpur U.)