R-Parity Violation and the Decay b to s gamma

Abstract

We investigate the influence of the R-parity violating couplings lambda, lambda' and lambda'' on the branching ratio of b to s gamma in leading logarithmic approximation. The operator basis is enlarged and the corresponding gamma-matrix calculated. The matching conditions receive new contributions from the R-parity violating sector. The comparison with the experiment is rather difficult due to the model dependence of the result.

35 pages, corrections to the γmatrix, enhanced phenomenological part, typos corrected, accepted for publication in Phys. Rev. D