PIRSA:15050042

Displaced vertices from dark matter freeze-in

(2015). Displaced vertices from dark matter freeze-in. Perimeter Institute. https://pirsa.org/15050042

Displaced vertices from dark matter freeze-in. Perimeter Institute, May. 08, 2015, https://pirsa.org/15050042 

          @misc{ pirsa_PIRSA:15050042,
            doi = {10.48660/15050042},
            url = {https://pirsa.org/15050042},
            author = {},
            keywords = {Particle Physics},
            language = {en},
            title = {Displaced vertices from dark matter freeze-in},
            publisher = {Perimeter Institute},
            year = {2015},
            month = {may},
            note = {PIRSA:15050042 see, \url{https://pirsa.org}}
          }
Talk number
PIRSA:15050042
Collection
Talk Type
Subject
Abstract


Freeze-in is a general and calculable mechanism for dark matter production in the early universe. Assuming a standard cosmological history, such a framework predicts metastable particles with a lifetime generically too long to observe their decays in a collider environment. In this talk I will report work in progress where we consider alternative cosmologies, where entropy dumped in the primordial Standard Model plasma leads to shorter lifetime for the metastable particles in order to reproduce the observed dark matter density. Famous examples are moduli decays in SUSY theories and inflationary reheating. Remarkably, for a large region of the parameter space the decay lengths are in the displaced vertex range and they can be observable at present and future colliders.