Asadi P, Kramer ED, Kuflik E, Ridgway GW, Slatyer TR, Smirnov J. Accidentally Asymmetric Dark Matter.
Phys Rev Lett 2021;
127:211101. [PMID:
34860089 DOI:
10.1103/physrevlett.127.211101]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 08/30/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
We study the effect of a first-order phase transition in a confining SU(N) dark sector with heavy dark quarks. The baryons of this sector are the dark matter candidates. During the confinement phase transition the heavy quarks are trapped inside isolated, contracting pockets of the deconfined phase, giving rise to a second stage of annihilation that dramatically suppresses the dark quark abundance. The surviving abundance is determined by the local accidental asymmetry in each pocket. The correct dark matter abundance is obtained for O(1-100) PeV dark quarks, above the usual unitarity bound.
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