Cosmic-ray Electron and Positron Excesses from Hidden Gaugino Dark Matter

TL;DR

This paper proposes a model where hidden gaugino dark matter decays via kinetic mixing, explaining observed excesses in cosmic-ray electrons and positrons detected by PAMELA and Fermi.

Contribution

It introduces a novel decay mechanism for hidden gaugino dark matter through kinetic mixing with a U(1)B-L gaugino, linking particle physics to cosmic-ray observations.

Findings

Decay of hidden gaugino accounts for cosmic-ray excesses

Model aligns with PAMELA and Fermi data

Suggests a connection between dark matter decay and high-energy cosmic rays

Abstract

We study a scenario that a hidden gaugino dark matter decays into the standard-model particles (and their supersymmetric partners) through a kinetic mixing with the gaugino of a U(1)B-L broken at a scale close to the grand unification scale. We show that decay of the hidden gaugino can explain excesses in the cosmic-ray electrons and positrons observed by PAMELA and Fermi.