B \to K^{*} \gamma Decay within MSSM

TL;DR

This paper analyzes the radiative B to K* gamma decay within the MSSM framework, calculating form factor corrections and exploring supersymmetry effects on decay observables to constrain squark mixing parameters.

Contribution

It provides a next-to-leading order PQCD analysis of the decay, including supersymmetry effects and constraints on squark mixing.

Findings

Calculated form factor corrections from gluon exchange.

Assessed supersymmetry impact on branching ratio and CP asymmetry.

Constrained squark mixing parameter $( ext{delta}_{23}^d)_{LR}$.

Abstract

The paper deals with a next-to-leading order analysis of the radiative $B \to K^* \gamma$ decay. Working in a PQCD approach, we compute the correction to the essential form factor, coming from a single gluon exchange with the spectator. We investigate the supersymmetry effects on the branching ratio and direct CP asymmetry and constrain the squark mixing parameter $(\delta_{23}^d)_{LR}$.