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arXiv 0710.5833hep-ph
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超对称经济3-3-1模型中作为自相互作用暗物质的右手中微子

Right-handed sneutrinos as self-interacting dark matter in supersymmetric economical 3-3-1 model

H. N. Long

摘要:

本文证明了超对称经济SU(3)_CXSU(3)_LXU(1)_X(3-3-1)规范模型是自相互作用暗物质的一个现实的候选者。在所考虑的模型中,右手中微子位于三重态的底部,三重态是标准模型SU(2)_L群的单重态。此外,右手中微子是最轻的slepton。利用这些性质,右手中微子与标准模型的相互作用是弱的,并且在没有引入额外对称性的情况下是稳定的。从Spergel-Steinhardt条件推导出典型的质量极限$\leq 10 $ MeV。在自相互作用耦合常数由超对称性确定的情况下,不作任何近似地导出了该极限。给出了宇宙中存在热生自相互作用暗物质的条件。

英文摘要:

In this work we show that the supersymmetric economical SU(3)_C X SU(3)_L X U(1)_X (3-3-1) gauge model has a realistic candidate for self-interacting dark matter. In the model under consideration, the right-handed sneutrino is in bottom of the triplet, which is a singlet of the Standard Model SU(2)_L group. In addition, the right-handed sneutrino is the lightest slepton. By these properties, the right-handed sneutrino is weakly interacting with the Standard Model and stable without introduction of extra symmetry. From the Spergel-Steinhardt condition, the typical mass limit $\leq 10 $ MeV is derived. With self-interacting coupling constant fixed by supersymmetry, this limit is deduced without any approximation. The condition for thermal generated self-interacting dark matter in the Universe is also obtained.

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