PIRSA:16070062

Codecaying Dark Matter

Dror, J. (2016). Codecaying Dark Matter. Perimeter Institute. https://pirsa.org/16070062

Dror, Jeff. Codecaying Dark Matter. Perimeter Institute, Jul. 15, 2016, https://pirsa.org/16070062 

          @misc{ pirsa_PIRSA:16070062,
            doi = {10.48660/16070062},
            url = {https://pirsa.org/16070062},
            author = {Dror, Jeff},
            keywords = {Particle Physics},
            language = {en},
            title = {Codecaying Dark Matter},
            publisher = {Perimeter Institute},
            year = {2016},
            month = {jul},
            note = {PIRSA:16070062 see, \url{https://pirsa.org}}
          }

Jeff Dror

Talk number
PIRSA:16070062
Collection
Talk Type
Subject
Abstract

In this talk I will propose a new mechanism for thermal dark matter freezeout, termed Co-Decaying Dark Matter. Multi-component dark sectors with degenerate particles and out-of-equilibrium decays can co-decay to obtain the observed relic density. The dark matter density is exponentially depleted through the decay of nearly degenerate particles, rather than from Boltzmann suppression. The relic abundance is set by the dark matter annihilation cross-section, which is predicted to be boosted, and the decay rate of the dark sector particles. Finally, I'll present a simple model that realizes co-decaying dark matter.