Abstract
We examine the dark matter phenomenology of a composite electroweak singlet state. This singlet belongs to the Goldstone sector of a well-motivated extension of the Littlest Higgs with T-parity. A viable parameter space, consistent with the observed dark matter relic abundance as well as with the various collider, electroweak precision and dark matter direct detection experimental constraints is found for this scenario. T-parity implies a rich LHC phenomenology, which forms an interesting interplay between conventional natural SUSY type of signals involving third generation quarks and missing energy, from stop-like particle production and decay, and composite Higgs type of signals involving third generation quarks associated with Higgs and electroweak gauge boson, from vector-like top-partners production and decay. The composite features of the dark matter phenomenology allows the composite singlet to produce the correct relic abundance while interacting weakly with the Higgs via the usual Higgs portal coupling λ DM∼ O(1 %) , thus evading direct detection.
Original language | English |
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Article number | 104 |
Number of pages | 20 |
Journal | European Physical Journal C |
Volume | 78 |
DOIs | |
Publication status | Published - 5 Feb 2018 |
Funding
We thank D. Pappadopulo, M. Ruhdorfer, E. Salvioni, and A. Vicchi for useful discussions. The work of RB is supported by the Minerva foundation. The work of GP is supported by grants from the BSF, ERC, ISF, Minerva, and the Weizmann-UK Making Connections Programme. RB and AW have been partially supported by the DFG cluster of excellence EXC 153 “Origin and Structure of the Universe”, by the Collaborative Research Center SFB1258, the COST Action CA15108, and the European Union’s Horizon 2020 research and innovation programme under the Marie Curie grant agreement, contract No. 675440. Funded by SCOAP
All Science Journal Classification (ASJC) codes
- Engineering (miscellaneous)
- Physics and Astronomy (miscellaneous)