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arXiv 0811.2556hep-ph
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具有自发CP破坏的左右对称模型中的规范单重态暗物质

Gauge-singlet dark matter in a left-right symmetric model with spontaneous CP violation

Wan-Lei Guo, Li-Ming Wang, Yue-Liang Wu, Yu-Feng Zhou, Ci Zhuang

摘要:

我们提出了一个暗物质(DM)的情况下,在一个规范单标量场的左右对称模型的扩展。规范单重标量可以自动成为DM候选者,前提是P和CP对称性仅自发破缺。因此,不需要额外的离散对称性来使DM候选稳定。约束后,从观察到的遗物DM密度模型参数,我们预测直接检测实验。结果表明,在一定的参数范围内,预测的WIMP-核子弹性散射截面可以达到目前的实验上界,这一点可以在不久的将来通过实验进行验证。

英文摘要:

We propose a dark matter (DM) scenario in an extension of a left-right symmetric model with a gauge-singlet scalar field. The gauge-singlet scalar can automatically become a DM candidate, provided that both P and CP symmetries are only broken spontaneously. Thus no extra discrete symmetries are needed to make the DM candidate stable. After constraining the model parameters from the observed relic DM density we make predictions for direct detection experiments. We show that for some parameter range, the predicted WIMP-nucleon elastic scattering cross section can reach the current experimental upper bound, which can be tested by the experiments in the near future.

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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