PIRSA:17110104

Cosmology and Signals of Strongly Interacting Dark Sectors

Blinov, N. (2017). Cosmology and Signals of Strongly Interacting Dark Sectors. Perimeter Institute. https://pirsa.org/17110104

Blinov, Nikita. Cosmology and Signals of Strongly Interacting Dark Sectors. Perimeter Institute, Nov. 21, 2017, https://pirsa.org/17110104 

          @misc{ pirsa_PIRSA:17110104,
            doi = {10.48660/17110104},
            url = {https://pirsa.org/17110104},
            author = {Blinov, Nikita},
            keywords = {Particle Physics},
            language = {en},
            title = {Cosmology and Signals of Strongly Interacting Dark Sectors},
            publisher = {Perimeter Institute},
            year = {2017},
            month = {nov},
            note = {PIRSA:17110104 see, \url{https://pirsa.org}}
          }

Nikita Blinov

York University

Talk number
PIRSA:17110104
Collection
Talk Type
Subject
Abstract

Standard Model particles account for a small fraction of the matter content of the universe.  If the remaining dark matter (DM) was ever in thermal equilibrium  with itself or with the Standard Model (SM) sector, there must  exist interactions that allowed its number density to be depleted  to its present value.  An interesting possibility for achieving this arises in scenarios  where the DM is composed of ``pions'' of a QCD-like dark sector.  The leading number changing process in these theories is the annihilation of three pions into two pions, which heats the pion bath relative to the SM. Consistency with observations of large and small scale structure in the universe requires a non-zero coupling with SM states, suggesting a multitude of experimental probes. I will review the cosmological production of DM in these strongly interacting dark sectors and discuss the prospects for discovering them at fixed target experiments.