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arXiv 2403.01729hep-ph
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惰性标量多重态的暗物质半湮灭

Dark matter semi-annihilation for inert scalar multiplets

Hugues Beauchesne, Cheng-Wei Chiang

AI总结:

本研究探讨了包含一个或两个惰性多重态的暗物质半湮灭模型的可行性,发现单重态无有效模型,双多重态模型有限,并对最优模型验证了其能在宽质量范围内获得正确遗迹丰度。

摘要:

暗物质半湮灭是指两个暗物质候选粒子湮灭为一个暗物质粒子和一个非暗物质粒子的过程。当稳定暗物质的对称性不同于 $\mathbb{Z}_2$ 时,这类过程很常见,并可能导致性质上不同的现象学。在本研究中,我们研究了包含一个或两个惰性多重态的半湮灭模型的可行性。对于一个多重态,我们证明不存在任何半湮灭有效的可行模型。对于两个多重态,半湮灭可以很有效,但可行且技术自然的模型数量有限。随后,我们对最有前景的模型进行了详细研究,表明在很宽的质量范围内可以获得正确的遗迹丰度。

英文摘要:

Dark matter semi-annihilation is a process through which two dark matter candidates annihilate to a single dark matter particle and a non-dark matter particle. Such processes are common when the symmetry stabilizing the dark matter differs from $\mathbb{Z}_2$ and can lead to qualitatively different phenomenology. In this work, we study the viability of semi-annihilation models including one or two inert multiplets. For one multiplet, we show that there does not exist any viable model in which semi-annihilation is efficient. For two multiplets, semi-annihilation can be efficient, but the number of viable and technically natural models is limited. We then perform a detailed study of the most promising model, showing that the correct relic abundance can be obtained for a wide range of masses.

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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