Badziak Marcin, Grilli di Cortona Giovanni, Harigaya Keisuke
Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, ul. Pasteura 5, PL-02-093 Warsaw, Poland.
School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540, USA.
Phys Rev Lett. 2020 Mar 27;124(12):121803. doi: 10.1103/PhysRevLett.124.121803.
Supersymmetric twin Higgs models have a discrete symmetry for which each standard model particle and its supersymmetric partner have a corresponding state that transforms under a mirror standard model gauge group. This framework is able to accommodate the nondiscovery of new particles at the LHC with the naturalness of the electroweak scale. We point out that supersymmetric twin Higgs models also provide a natural dark matter candidate. We investigate the possibility that a twin binolike state is the lightest supersymmetric particle and find that its freeze-out abundance can explain the observed dark matter abundance without fine-tuning the mass spectrum of the theory. Most of the viable parameter space can be probed by future dark matter direct detection experiments, and the LHC searches for staus and Higgsinos which may involve displaced vertices.
超对称孪生希格斯模型具有一种离散对称性，对于该对称性，每个标准模型粒子及其超对称伙伴都有一个相应的状态，该状态在镜像标准模型规范群下变换。这个框架能够以电弱标度的自然性来解释在大型强子对撞机（LHC）中未发现新粒子的情况。我们指出，超对称孪生希格斯模型还提供了一种自然的暗物质候选者。我们研究了一种孪生双轻子样态是最轻超对称粒子的可能性，并发现其冻结丰度可以解释观测到的暗物质丰度，而无需对理论的质量谱进行微调。未来的暗物质直接探测实验可以探测到大部分可行参数空间，并且LHC对可能涉及偏移顶点的τ子和希格斯微子进行搜索。
