Cosmic-Ray Positron from Superparticle Dark Matter and the PAMELA Anomaly

TL;DR

This paper investigates whether superparticle dark matter can explain the positron excess observed by PAMELA, by calculating cosmic-ray positron fluxes from dark matter annihilation and decay.

Contribution

It provides a detailed analysis of cosmic-ray positron flux from superparticle dark matter and demonstrates its potential to account for PAMELA's positron excess.

Findings

Superparticle dark matter can produce positron fluxes consistent with PAMELA data.

Certain superparticle models explain the observed positron excess.

The study supports superparticle dark matter as a viable source of cosmic-ray positrons.

Abstract

Motivated by the anomalous positron flux recently reported by the PAMELA collaboration, we study the cosmic-ray positron produced by the pair annihilation and the decay of superparticle dark matter. We calculate the cosmic-ray positron flux and discuss implications of the PAMELA data. We show that the positron excess observed by the PAMELA can be explained with some of the superparticle dark matter.