Signatures of dark matter annihilation in the light of PAMELA/ATIC anomaly

TL;DR

This paper explores how recent cosmic-ray data from PAMELA and ATIC could signal dark matter annihilation, examining related astrophysical constraints and implications for dark matter models.

Contribution

It analyzes the compatibility of dark matter annihilation signals with gamma-ray, neutrino, and nucleosynthesis observations, providing constraints on dark matter models.

Findings

Stringent constraints on annihilating dark matter models

Potential link between cosmic-ray anomalies and dark matter

Implications for astrophysical observations and model viability

Abstract

Recent measurements of cosmic-ray electron and positron fluxes by PAMELA and ATIC experiments may indicate the existence of annihilating dark matter with large annihilation cross section. We discuss its possible relation to other astrophysical/cosmological observations : gamma-rays, neutrinos, and big-bang nucleosynthesis. It is shown that they give stringent constraints on some annihilating dark matter models.