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arXiv 2103.09822hep-phastro-ph.CO
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偶然不对称的暗物质

Accidentally Asymmetric Dark Matter

Pouya Asadi, Eric David Kramer, Eric Kuflik, Gregory W. Ridgway, Tracy R. Slatyer, Juri Smirnov

摘要:

研究了重暗夸克约束$SU(N)$暗扇区中的一级相变效应。这个扇区的重子是暗物质的候选者。在禁闭相变期间,重夸克被困在孤立的、收缩的退禁闭相口袋中,引起第二阶段的湮灭,这极大地抑制了暗夸克的丰度。幸存的丰度由每个口袋中的局部偶然不对称性决定。正确的暗物质丰度得到的$\mathcal{O}(1-100)$ PeV暗夸克,高于通常的幺正界限。

英文摘要:

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 candidate. 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 $\mathcal{O}(1-100)$ PeV dark quarks, above the usual unitarity bound.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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