Stealth dark matter confinement transition and gravitational waves

Brower, R. C.; Cushman, K.; Fleming, G. T.; Gasbarro, A.; Hasenfratz, A.; Jin, X. Y.; Kribs, G. D.; Neil, E. T.; Osborn, J. C.; Rebbi, C.; Rinaldi, E.; Schaich, D.; Vranas, P.; Witzel, O. (2021). Stealth dark matter confinement transition and gravitational waves. Physical review. D - particles, fields, gravitation, and cosmology, 103(1), 014505. American Physical Society 10.1103/PhysRevD.103.014505

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We use nonperturbative lattice calculations to investigate the finite-temperature confinement transition of stealth dark matter, focusing on the regime in which this early-Universe transition is first order and would generate a stochastic background of gravitational waves. Stealth dark matter extends the standard model with a new strongly coupled SU(4) gauge sector with four massive fermions in the fundamental representation, producing a stable spin-0 "dark baryon" as a viable composite dark matter candidate. Future searches for stochastic gravitational waves will provide a new way to discover or constrain stealth dark matter, in addition to previously investigated direct-detection and collider experiments. As a first step to enabling this phenomenology, we determine how heavy the dark fermions need to be in order to produce a first-order stealth dark matter confinement transition.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Gasbarro, Andrew David and Schaich, David Alexander

Subjects:

500 Science > 530 Physics

ISSN:

1550-7998

Publisher:

American Physical Society

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

12 Feb 2021 12:13

Last Modified:

12 Feb 2021 12:13

Publisher DOI:

10.1103/PhysRevD.103.014505

ArXiv ID:

2006.16429

BORIS DOI:

10.48350/151873

URI:

https://boris.unibe.ch/id/eprint/151873

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