PIRSA:16070062

Codecaying Dark Matter

APA

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

MLA

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

BibTex

          @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/index.php/pirsa/16070062}}
          }
          
Talk numberPIRSA:16070062
Source RepositoryPIRSA
Collection

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.