期刊
PHYSICS LETTERS B
卷 769, 期 -, 页码 129-133出版社
ELSEVIER
DOI: 10.1016/j.physletb.2017.03.044
关键词
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资金
- Academy of Finland
- Higgs Boson
- Cosmos
- National Science Centre, Poland [DEC-2014/15/B/ST2/02157, DEC-2015/19/B/ST2/02848, DEC-2015/18/M/ST2/00054]
- JSPS Fellowships
Many models of Higgs portal Dark Matter (DM) find themselves under pressure from increasingly tight direct detection constraints. In the framework of gauge field DM, we study how such bounds can be relaxed while retaining the thermal WIMP paradigm. When the hidden sector gauge symmetry is broken via the Higgs mechanism, the hidden sector generally contains unstable states which are lighter than dark matter. These states provide DM with an efficient annihilation channel. As a result, the DM relic abundance and the direct detection limits are controlled by different parameters, and the two can easily be reconciled. This simple setup realizes the idea of secluded dark matter naturally. (C) 2017 The Author(s). Published by Elsevier B.V.
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