Dark Matter detection via lepton cosmic rays

TL;DR

This paper investigates whether dark matter or astrophysical sources like supernovae best explain recent cosmic ray observations of leptons, analyzing their potential signatures in positron excess and electron flux.

Contribution

It provides an updated analysis comparing dark matter and astrophysical explanations for lepton cosmic ray observations.

Findings

Dark matter could contribute to positron excess

Supernovae remain a viable astrophysical source

The study refines constraints on dark matter signals

Abstract

Recent observations of lepton cosmic rays, coming from the PAMELA and FERMI experiments, have pushed our understanding of the interstellar medium and cosmic rays sources to unprecedented levels. The imprint of dark matter on lepton cosmic rays is the most exciting explanation of both PAMELA's positron excess and FERMI's total flux of electrons. Alternatively, supernovae are astrophysical objects with the same potential to explain these observations. In this work, we present an updated study of the astrophysical sources of lepton cosmic rays and the possible trace of a dark matter signal on the positron excess and total flux of electrons.