# Evidence for non-Abelian dark matter from large scale structure?

- Institution: CERN
- Department: TH Theoretical Seminar
- Speaker: Martin Schmaltz
- Year: 2015
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3018207)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

In this talk I will explore the possibility that dark matter particles may come in mass-degenerate multiplets. A trivial consequence of this multiplicity are N-factors in dark matter cross sections which have non-trivial implications for dark matter searches. If dark matter multiplicity arises from a weakly coupled non-Abelian dark gauge group the corresponding "dark gluons" can have interesting signatures in cosmology which I will review: 1. the "dark gluons" contribute to the radiation content of the universe and 2. gluon interactions with the dark matter may explain the >3 sigma discrepancy between precision fits to the CMB from Planck and direct measurements of large scale structure in the universe..

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## Lectures

1. [Evidence for non-Abelian dark matter from large scale structure?](https://invisiblenetwork.ai/learn/cern/3018207/3418a24c46e4), 1 h 4 min (CERN's player)