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arXiv 1012.5756astro-ph.COhep-phnucl-exnucl-th
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从新的稳定夸克和轻子看暗物质的暗原子

Dark Atoms of Dark Matter from New Stable Quarks and Leptons

Maxim Yu. Khlopov

摘要:

宇宙中的非重子暗物质可以由新的稳定的带电轻子和夸克组成,如果它们隐藏在复合暗物质的难以捉摸的“暗原子”中的话。这种可能性可以与反常同位素的严格约束相兼容,如果存在带-2电荷的稳定粒子,而不存在带+1和-1电荷的稳定粒子。这些条件不能在超对称模型中实现,但可以在最近开发的几种替代方案中得到满足。过量的-2带电粒子与原始氦结合在O-氦“原子”中,保持特定的核相互作用形式的比冷更热的暗物质。在这种情况下,直接寻找暗物质的难题反映了O-氦的非平凡核物理学。

英文摘要:

The nonbaryonic dark matter of the Universe can consist of new stable charged leptons and quarks, if they are hidden in elusive "dark atoms" of composite dark matter. Such possibility can be compatible with the severe constraints on anomalous isotopes, if there exist stable particles with charge -2 and there are no stable particles with charges +1 and -1. These conditions cannot be realized in supersymmetric models, but can be satisfied in several recently developed alternative scenarios. The excessive -2 charged particles are bound with primordial helium in O-helium "atoms", maintaining specific nuclear-interacting form of the Warmer than Cold Dark Matter. The puzzles of direct dark matter searches appear in this case as a reflection of nontrivial nuclear physics of O-helium.

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