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arXiv 0907.1007hep-ph
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受限隐矢量暗物质

Confined hidden vector dark matter

Thomas Hambye, Michel H. G. Tytgat

摘要:

我们认为,通过希格斯门与标准模型通信的封闭隐藏扇区的最轻矢量束缚态是稳定的,是暗物质的可行候选者。该模型基于SU(2)规范群,其基本表象为标量场,最轻矢量束缚态的稳定性源于保管对称性的存在。由于遗迹密度基本上取决于在隐藏的部门,Lambda_HS,与WMAP丰度协议的限制规模需要Lambda_HS在20-120 TeV的范围。

英文摘要:

We argue that the lightest vector bound states of a confining hidden sector communicating with the Standard Model through the Higgs portal are stable and are viable candidates of dark matter. The model is based on an SU(2) gauge group with a scalar field in its fundamental representation and the stability of the lightest vector bound state results from the existence of a custodial symmetry. As the relic density depends essentially on the scale of confinement in the hidden sector, Lambda_HS, agreement with WMAP abundance requires Lambda_HS in the 20-120 TeV range.

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