CP Asymmetry for Inclusive Decay $B \to X_d + \gamma$ in the Minimal Supersymmetric Standard Model

TL;DR

This paper investigates the CP asymmetry in the inclusive decay $B o X_d + \gamma$ within the Minimal Supersymmetric Standard Model, revealing two viable parameter sets with differing CP asymmetry signs and magnitudes.

Contribution

It provides the first detailed calculation of CP asymmetry in this decay mode within the MSSM, identifying parameter sets with distinct CP asymmetry signs.

Findings

Two acceptable SUSY parameter sets identified.

CP asymmetry ranges from 5% to 45% in one set.

Negative CP asymmetry between -2% and -21% in the other set.

Abstract

We study the inclusive rare decay $B\to X_d+\gamma$ in the supergravity inspired Minimal Supersymmetric Standard Model and compute the CP-asymmetry in the decay rates. We show that there exist two phenomenologically acceptable sets of SUSY parameters: for one set the CP-asymmetry has the same (positive) sign as in the Standard Model and lies in the range (5-45)% while for the other set it is negative with values within -(2-21)%.