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Effective theory for dark matter and a new force in the dark matter sector
journal contribution
posted on 2023-06-07, 23:19 authored by Xavier CalmetXavier Calmet, Swarup Kumar MajeeAn effective theory for dark matter has recently been proposed. The key assumption is that the dark matter particle which is a Dirac fermion is protected from decaying by a global U(1) symmetry. We point out that quantum gravity effects will violate this symmetry and that the dark matter candidate thus decays very fast. In order to solve that problem, we propose to consider a local gauge symmetry which implies a new force in the dark matter sector. It is likely that this new local U(1) symmetry will need to be spontaneously broken leading for a range of the parameters of the model to a Sommerfeld enhancement of the annihilation cross sections which is useful to explain the Pamela and ATIC results using a weakly interacting massive particle with a mass in the TeV range.
History
Publication status
- Published
Journal
Physics Letters BISSN
0370-2693External DOI
Issue
3Volume
679Page range
267-269Pages
3.0Department affiliated with
- Physics and Astronomy Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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