Squark Decays in MSSM Under the Cosmological Bounds

TL;DR

This paper numerically investigates fermionic two-body decays of squarks in the MSSM, considering cosmological bounds, and highlights the significant phase dependence of decay widths as potential probes of CP violation.

Contribution

It provides a detailed analysis of squark decay widths under cosmological constraints, emphasizing the impact of CP phases on decay processes in the MSSM.

Findings

Decay widths show significant phase dependence.

CP phases can serve as probes of CP violation.

Branching ratios and decay widths are affected by cosmological bounds.

Abstract

We present the numerical investigation of the fermionic two-body decays of squarks in the Minimal Supersymmetric Standard Model with complex parameters. In the analysis we particularly take into account the cosmological bounds imposed by WMAP data. We find that the phase dependences of the decay widths of the third family squarks, as well as those of the first and second families, are quite significant which can provide viable probes of additional CP sources. We plot the CP phase dependences for each fermionic two-body decay channel of squarks $\tilde q_i$ (i=1,2, q=u,d;c,s;t,b) and speculate about the branching ratios and total (two-body) decay widths.