PIRSA:16070062

Video URL

https://pirsa.org/16070062

Codecaying Dark Matter

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

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

          @misc{ scivideos_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 for Theoretical Physics},
            year = {2016},
            month = {jul},
            note = {PIRSA:16070062 see, \url{https://scivideos.org/pirsa/16070062}}
          }

Jeff Dror

Talk numberPIRSA:16070062
DOI10.48660/16070062
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
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.