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arXiv 0902.0769astro-ph.COhep-ph
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Axinos作为暗物质粒子

Axinos as Dark Matter Particles

Laura Covi, Jihn E. Kim

摘要:

在我们的粒子物理模型中,暗物质的识别仍然是一个非常开放的问题。在这里,我们将认为,axinos可以成功的暗物质的候选人模型与超对称性和强CP问题的轴子解决方案。Axinos可以是最轻的超对称粒子(LSP),也可以比LSP重。Axinos可以通过热散射以适当的丰度产生,如果它们是LSP,也可以通过SM场(LSPSM)的最轻超伙伴的平衡衰变产生。另一方面,较重的(非LSP)轴伴子可以产生一部分中性伴子LSP暗物质。根据超对称光谱的性质,如果R宇称是严格守恒的或稍微破缺的,那么在对撞机和天体物理学中可能会出现非常不同的LSP轴突场景信号。

英文摘要:

The identification of dark matter in our particle physics model is still a very open question. Here we will argue that axinos can be successful dark matter candidates in models with supersymmetry and the axion solution of the strong CP problem. Axinos can be the lightest supersymmetric particle (LSP), or can be heavier than the LSP. Axinos can be produced in the right abundance by thermal scatterings and if they are the LSP also by out of equilibrium decays of the lightest superpartner of SM fields (LSPSMs). On the other hand heavier (not LSP) axinos can generate a part of the neutralino LSP dark matter. Depending on the nature of the supersymmetric spectrum, and if R-parity is strictly conserved or slightly broken, very different signals of the LSP axino scenario can arise at colliders and in astrophysics.

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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