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arXiv 1407.4121hep-phastro-ph.COhep-ex
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非对称暗物质的稳定束缚态

Stable Bound States of Asymmetric Dark Matter

Mark B. Wise, Yue Zhang

摘要:

最简单的非对称暗物质束缚态的可重正化有效场论包含两个额外的规范单重场,一个是暗物质,另一个是暗物质湮灭成的介体粒子。我们研究这样一个模型的物理与狄拉克费米子的暗物质和一个真正的标量介体。在一定的参数范围内,暗物质与介质的汤川耦合产生稳定的非对称暗物质束缚态。我们推导出包括由$N\gg1$暗物质粒子形成的块金在内的束缚态的性质。我们还考虑了早期宇宙中束缚态的形成和暗物质束缚态的直接探测。我们的许多结果也适用于对称的暗物质。

英文摘要:

The simplest renormalizable effective field theories with asymmetric dark matter bound states contain two additional gauge singlet fields one being the dark matter and the other a mediator particle that the dark matter annihilates into. We examine the physics of one such model with a Dirac fermion as the dark matter and a real scalar mediator. For a range of parameters the Yukawa coupling of the dark matter to the mediator gives rise to stable asymmetric dark matter bound states. We derive properties of the bound states including nuggets formed from $N\gg1$ dark matter particles. We also consider the formation of bound states in the early universe and direct detection of dark matter bound states. Many of our results also hold for symmetric dark matter.

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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