Strongly Interacting Light Dark Matter
Sebastian Bruggisser, Francesco Riva, Alfredo Urbano
SciPost Phys. 3, 017 (2017) · published 2 September 2017
- doi: 10.21468/SciPostPhys.3.3.017
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Abstract
In the presence of approximate global symmetries that forbid relevant interactions, strongly coupled light Dark Matter (DM) can appear weakly coupled at small energy and generate a sizable relic abundance. Fundamental principles like unitarity restrict these symmetries to a small class, where the leading interactions are captured by effective operators up to dimension-8. Chiral symmetry, spontaneously broken global symmetries and non-linearly realized supersymmetry are examples of this. Their DM candidates (composite fermions, pseudo Nambu-Goldstone Bosons and Goldstini) are interesting targets for LHC missing-energy searches.
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