Electroweak Baryogenesis in the Exceptional Supersymmetric Standard Model

TL;DR

This paper investigates electroweak baryogenesis within the E_6 inspired exceptional supersymmetric standard model, demonstrating that CP-violating sources from singlinos and a new gaugino can produce the observed baryon asymmetry.

Contribution

It provides a detailed calculation of relaxation coefficients and transport equations in the E_6SSM, showing these sources can account for the Universe's baryon asymmetry.

Findings

CP-violating sources from singlinos and gauginos can generate correct baryon asymmetry

Numerical simulations confirm the viability of electroweak baryogenesis in E_6SSM

Transport equations support the mechanism's effectiveness

Abstract

We study electroweak baryogenesis in the E_6 inspired exceptional supersymmetric standard model ( E_6SSM ). The relaxation coefficients driven by singlinos and the new gaugino as well as the transport equation of the Higgs supermultiplet number density in the E_6SSM are calculated. Our numerical simulation shows that both CP-violating source terms from singlinos and the new gaugino can solely give rise to a correct baryon asymmetry of the Universe via the electroweak baryogenesis mechanism.