R-Parity violation in B --> pi+ pi- decay
  We consider the impact of R-parity violating suprsymmetry in the nonleptonic decay B --> pi+ pi-. This is one of the rare instances where new physics contributes to both B-Bbar mixing and B --> pi+ pi- decay. We do a numerical analysis to capture the interplay between these two effects and place constraints on the relevant parameter space. 
Gautam Bhattacharyya, Amitava Datta, Anirban Kundu