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arXiv 0903.1708hep-ph
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非对易时空中作为冷暗物质的单重态粒子

Singlet particles as cold dark matter in noncommutative space-time

M. M. Ettefaghi

摘要:

我们扩展了非对易(NC)标准模型,将单线态粒子作为冷暗物质。在NC时空中,单态粒子可以在伴随表象中耦合到U(1)规范场。我们研究了由NC诱导相互作用产生的单重态粒子的残余密度。在要求单重态费米子或单重态标量充当冷暗物质,且NC诱导的相互作用与暗物质的产生有关的条件下,得到了NC标度与暗物质质量之间的对应关系,该关系与已有的一些界限一致.

英文摘要:

We extend the noncommutative (NC) standard model to incorporate singlet particles as cold dark matter. In the NC space-time, the singlet particles can be coupled to the U(1) gauge field in the adjoint representation. We Study the relic density of the singlet particles due to the NC induced interaction. Demanding either the singlet fermion or the singlet scalar to serve as cold dark matter and the NC induced interactions to be relevant to the dark matter production, we obtain the corresponding relations between the NC scale and the dark matter masses, which are consistent with some existing bounds.

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