Pseudo-Nambu-Goldstone dark matter and two-Higgs-doublet models
Jul 22, 2019
18 pages
Published in:
- Phys.Rev.D 100 (2019) 7, 075011
- Published: Oct 11, 2019
e-Print:
- 1907.09684 [hep-ph]
View in:
Citations per year
Abstract: (arXiv)
We study a dark matter model with one singlet complex scalar and two Higgs doublets. The scalar potential respects a softly broken global symmetry, which makes the imaginary part of the singlet become a pseudo-Nambu-Goldstone boson acting as a dark matter candidate. The pseudo-Nambu-Goldstone nature of the boson leads to the vanishing of its tree-level scattering amplitude off nucleons at zero momentum transfer. Therefore, although the interaction strength could be sufficiently large to yield a viable relic abundance via thermal mechanism, direct detection is incapable of probing this candidate. We further investigate the constraints from Higgs measurements, relic abundance observation, and indirect detection.Note:
- 33 pages, 11 figures; revisions to match the published version
- Beyond the standard model
- Higgs particle: doublet: 2
- Goldstone particle: pseudoscalar
- Goldstone particle: scattering amplitude
- potential: scalar
- symmetry: global
- symmetry breaking: model
- singlet: 1
- dark matter: scalar
- dark matter: relic density
References(109)
Figures(18)
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