Gravitational wave signals of pseudo-Goldstone dark matter in the Z3 complex singlet model
Abstract
We study pseudo-Goldstone dark matter in the Z3 complex scalar singlet model. Because the direct detection spin-independent cross section is suppressed, such dark matter is allowed in a large mass range. Unlike in the original model stabilized by a parity and due to the cubic coupling of the singlet, the Z3 model can accommodate first-order phase transitions that give rise to a stochastic gravitational wave signal potentially observable in future space-based detectors.
- Publication:
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Physical Review D
- Pub Date:
- February 2020
- DOI:
- 10.1103/PhysRevD.101.035001
- arXiv:
- arXiv:1907.13136
- Bibcode:
- 2020PhRvD.101c5001K
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 9 pages, 2 figures