July 31, 2017 to August 4, 2017
Fermi National Accelerator Laboratory
US/Central timezone

Supersymmetric Resonant Dark Matter: an Explanation to AMS-02 Positron Excess

Aug 1, 2017, 11:45 AM
Hornets Nest (Fermi National Accelerator Laboratory)

Hornets Nest

Fermi National Accelerator Laboratory

Presentation Dark Matter Dark Matter


Joshua Berger (University of Wisconsin-Madison)


We construct a thermal dark matter model with the dark matter annihilations mediated by a resonance to explain the positron excess observed by PAMELA, Fermi-LAT and AMS-02 and to satisfy other experimental constraints. Based on a spontaneous breaking global symmetry of SU(3)/SU(2)xU(1), we provide a natural explanation for why the resonance mass is very close to twice of the dark matter mass. The pseudo Nambu Goldstone Bosons in the coset space, with a mass below one GeV, mainly decay into two muons and provide a good fit to the positron excess spectrum. I will also discuss other dark matter phenomenology of our model.

Primary author

Dr Yang Bai (University of Wisconsin-Madison)


Joshua Berger (University of Wisconsin-Madison) Sida Lu (University of Wisconsin-Madison)

Presentation materials