Probing new physics through B->K l+ l- decays in R-parity violating minimal supersymmetric standard model

TL;DR

This paper investigates how R-parity violating supersymmetry affects B->K l+ l- decays, highlighting potential observable effects on asymmetries and branching ratios that could reveal new physics beyond the Standard Model.

Contribution

It provides a detailed analysis of R-parity violating effects on B->K l+ l- decay observables, emphasizing the sensitivity of asymmetries to new physics contributions.

Findings

R-parity violating couplings significantly affect branching ratios.

Forward-backward and polarization asymmetries are sensitive probes.

Predicted CP asymmetry aligns with recent experimental data.

Abstract

We study the decay rate of process B->K l+ l- (l=e,mu) and some of its other related observables, like forward backward asymmetry (A_{FB}), polarization asymmetry (PA) and CP-asymmetry (A_{CP}) in R-parity violating (R_{p}) Minimal Supersymmetric Standard Model (MSSM). The analysis shows that R_{p}Yukawa coupling products contribute significantly to the branching fraction of B->K l+ l- within 1 sigma and 2 sigma. Study shows that PA and A_{FB} are sensitive enough to R_{p}Yukawa coupling products and turn out to be good predictions for measurement in future experiments.The CP-asymmetry calculated in this framework agrees well with the recently reported value(i.e. 7%).