ATIC and PAMELA Results on Cosmic e^\pm Excesses and Neutrino Masses

TL;DR

This paper explores models linking dark matter annihilation, which explains cosmic e^ excesses observed by ATIC and PAMELA, to neutrino mass generation, providing a unified explanation for both phenomena.

Contribution

It proposes a class of models that simultaneously account for cosmic ray excesses and generate small neutrino masses through detailed numerical analysis.

Findings

Models can naturally explain e^ excesses and neutrino masses

Consistent with ATIC and PAMELA cosmic ray data

Link between dark matter physics and neutrino mass generation

Abstract

Recently the ATIC and PAMELA collaborations released their results which show the abundant e^\pm excess in cosmic rays well above the background, but not for the \bar{p}. Their data if interpreted as the dark matter particles' annihilation imply that the new physics with the dark matter is closely related to the lepton sector. In this paper we study the possible connection of the new physics responsible for the cosmic e^\pm excesses to the neutrino mass generation. We consider a class of models and do the detailed numerical calculations. We find that these models can natually account for the ATIC and PAMELA e^\pm and \bar{p} data and at the same time generate the small neutrino masses.