Asymmetric Higgsino Dark Matter

TL;DR

This paper explores the viability of higgsinos as asymmetric dark matter candidates within supersymmetry, requiring heavy gauginos and a low-temperature electroweak phase transition.

Contribution

It demonstrates that higgsinos can serve as asymmetric dark matter if gauginos are heavy and the electroweak transition occurs at low temperatures.

Findings

Higgsinos can be viable dark matter candidates under specific conditions.

Gauginos, squarks, and sleptons must be very heavy.

Electroweak phase transition temperature should be between 1-10 GeV.

Abstract

In the supersymmetric framework, a higgsino asymmetry exists in the universe before the electroweak phase transition. We investigate whether the higgsino is a viable asymmetric dark matter candidate. We find that this is indeed possible. The gauginos, squarks and sleptons must all be very heavy, such that the only electroweak-scale superpartners are the higgsinos. The temperature of the electroweak phase transition must be in the (1-10) GeV range.