PAMELA and ATIC Anomalies in Decaying Gravitino Dark Matter Scenario

TL;DR

This paper explores whether decaying gravitino dark matter can explain the cosmic-ray electron and positron anomalies observed by PAMELA and ATIC, providing flux calculations and discussing related synchrotron radiation implications.

Contribution

It demonstrates that decaying gravitino dark matter can account for the PAMELA and ATIC anomalies, offering a novel explanation within this dark matter scenario.

Findings

Cosmic-ray fluxes match PAMELA and ATIC data

Decaying gravitino scenario explains observed anomalies

Predicted synchrotron radiation flux from Galactic center

Abstract

Motivated by the recent results from the PAMELA and ATIC, we study the cosmic-ray electron and positron produced by the decay of gravitino dark matter. We calculate the cosmic-ray electron and positron fluxes and discuss implications to the PAMELA and ATIC data. In this paper, we will show that the observed anomalous fluxes by the PAMELA and ATIC can be explained in such a scenario. We will also discuss the synchrotron radiation flux from the Galactic center in such a scenario.