August 28, 2011 to September 2, 2011
Fermilab
US/Central timezone
Slides available on Indico -- there are no formal proceedings

Cosmic Ray Anomalies, Gamma Ray Constraints and Subhalos in Models of Dark Matter Annihilation

Sep 1, 2011, 3:30 PM
20m
D: Wilson Hall 1 North

D: Wilson Hall 1 North

Dark matter: models Parallel Session 9

Speaker

Mr Wei XUE (Physics Department, McGill University)

Description

We consider Sommerfeld-enhanced annihilation of dark matter into leptons to explain PAMELA and Fermi electron and positron observations, in light of possible new effects from sub-structure. There is strong tension between getting a large enough lepton signal while respecting constraints on the fluxes of associated gamma rays; we show how DM annihilations within subhalos can get around these constraints. And we demonstrate that this can be achieved in a simple class of particle physics models in which the DM annihilates via a hidden leptophilic U(1) vector boson.

Primary authors

Mr Aaron Vincent (Physics Department, McGill University) Prof. James Cline (Physics Department, McGill University) Mr Wei XUE (Physics Department, McGill University)

Presentation materials