Constraints on R-parity violating interactions in supersymmetric standard model from leptonic decays of Ds and B+ mesons

摘要

We study leptonic decays D_so au u and B^+ o au u in R-parityviolating (RPV) supersymmetric standard model. The interference between thes-channel slepton exchange and the t-channel squark exchange diagrams could bedestructive in a certain model parameter region so that sizable RPV couplingsare allowed. Contributions from the RPV interactions to the final states withthe lepton flavor violation (LFV), auu_mu (au u_e), are also examinedtaking account of constraints on the RPV couplings from the other LFVprocesses.