Coleman-Weinberg dynamics of ultralight scalar dark matter and GeV-scale right-handed neutrinos
Abstract
We consider an extension of the Standard Model by three singlet fermions and one singlet real scalar field. The scalar is an ultralight dark matter candidate whose abundance is set by dynamically induced misalignment from the Higgs portal. We focus on parameter space where the Coleman-Weinberg potential both fixes the dark matter relic abundance, and predicts the mass scale of right-handed neutrinos. The model prefers scalar masses in the range of 10 μeV ≲ mϕ ≲ 10 meV, and can be tested via direct searches for a light scalar (e.g. fifth force tests), or by searching for right-handed neutrinos in laboratory experiments.
Copyright and License
© The Authors. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Article funded by SCOAP3.
Acknowledgement
We thank Akshay Ghalsasi and especially Brian Batell for useful discussions about thermal misalignment in the context of the Higgs portal. Mark Wise supplied helpful comments on the possibility of parametric resonances. We acknowledge useful discussions with Junwu Huang, Maxim Pospelov, Marilena Loverde, Michael Ratz, and Yohei Ema about initial conditions after inflation. We thank Brian Batell, Akshay Ghalsasi, Peizhi Du, Michael Ratz, and Mark Wise for feedback on the manuscript. We acknowledge the hospitality of the Simons Center for Physics and Geometry and the Aspen Center for Physics (which is supported by National Science Foundation grant PHY-2210452) while part of this work was being completed.
Funding
This work is supported by the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under Award Number DE-SC0011632 and by the Walter Burke Institute for Theoretical Physics. RP is supported by the Neutrino Theory Network under Award Number DEAC02-07CH11359, the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under Award Number DE-SC0011632, and by the Walter Burke Institute for Theoretical Physics.
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Additional details
- National Science Foundation
- PHY-2210452
- United States Department of Energy
- DE-SC0011632
- California Institute of Technology
- Walter Burke Institute for Theoretical Physics -
- United States Department of Energy
- DEAC02-07CH11359
- United States Department of Energy
- DE-SC0011632
- SCOAP3
- Accepted
-
2024-08-07
- Available
-
2024-08-21Published
- Caltech groups
- Walter Burke Institute for Theoretical Physics, Division of Physics, Mathematics and Astronomy (PMA)
- Publication Status
- Published