Constraints on the R-parity Violating Couplings from $B^\pm \to l^\pm \nu$ Decays

TL;DR

This paper establishes upper bounds on R-parity-violating couplings using B-meson decay data and explores their potential impact on Bc decays, providing constraints that are comparable or stronger than existing bounds.

Contribution

It derives new upper bounds on R-parity- and lepton-flavor-violating couplings from B decay processes and investigates their effects on Bc decays, enhancing understanding of R-parity violation implications.

Findings

Upper bounds on certain R-parity-violating couplings are established.

R-parity violation can significantly affect Bc to l nu decay modes.

Constraints are comparable or stronger than previous bounds.

Abstract

We derive the upper bounds on certain products of R-parity- and lepton-flavor-violating couplings from $B^\pm \to l^\pm \nu$ decays. These modes of B-meson decays can constrain the product combinations of the couplings with one or more heavy generation indices which are comparable with or stronger than the present bounds. And we investigate the possible effects of R-parity violating interactions on $B_c \to l \nu$ decays. These decay modes can be largely affected by R-parity violation.