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arXiv 2202.10488hep-ph
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超对称Twin Higgs模型中的带电暗物质

Charged Dark Matter in Supersymmetric Twin Higgs models

Marcin Badziak, Giovanni Grilli di Cortona, Keisuke Harigaya, Michał Łukawski

摘要:

超对称双希格斯模型改善了来自大型强子对撞机未发现它们所需的重标量顶部伙伴的电弱尺度的微调。如果锂离子超对称粒子位于孪晶扇区,即使它在孪晶规范相互作用下带电,也可能扮演暗物质的角色。我们表明,双stau是一个可行的候选人带电暗物质,即使双电磁规范对称性是未破缺的,与热遗迹丰度,自然匹配观测到的暗物质丰度。一个宽的参数空间满足所有的实验约束,包括那些对暗物质自相互作用。在未来的直接探测实验中,如LUX-ZEPLIN,可以观察到双态暗物质。这个粒子的质量在300-500 GeV之间,在最小的情况下,它的衰变长度足以在大型强子对撞机上被观察到。

英文摘要:

Supersymmetric Twin Higgs models ameliorate the fine-tuning of the electroweak scale originating from the heavy scalar top partners required by the non-discovery of them at the Large Hadron Collider. If the Lightest Supersymmetric Particle resides in the twin sector, it may play the role of dark matter even if it is charged under twin gauge interactions. We show that the twin stau is a viable candidate for charged dark matter, even if the twin electromagnetic gauge symmetry is unbroken, with thermal relic abundance that naturally matches the observed dark matter abundance. A wide parameter space satisfies all the experimental constraints including those on dark matter self-interactions. Twin stau dark matter can be observed in future direct detection experiments such as LUX-ZEPLIN. The stau has a mass in the range of 300-500 GeV, and in the minimal scenario, has a decay length long enough to be observed as a disappearing track or a long-lived particle at the Large Hadron Collider.

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