arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1601.03566hep-phastro-ph.CO
收藏

共振SIMP暗物质

Resonant SIMP dark matter

Soo-Min Choi, Hyun Min Lee

摘要:

我们考虑了在局域暗$U(1)_D$下带有两个单重态复标量场的模型中的共振SIMP暗物质。当$U(1)_D$分解为$Z_5$离散子群后,较轻的标量场成为在较重的标量场共振附近具有增强的$3\rightarrow 2$湮灭截面的SIMP暗物质.对于SIMP的微扰耦合,SIMP的自散射截面和残余密度的界可以同时满足。SM超荷和暗规范玻色子之间的小规范动力学混合可以用来使SIMP暗物质在冻结过程中与SM处于动力学平衡。

英文摘要:

We consider a resonant SIMP dark matter in models with two singlet complex scalar fields charged under a local dark $U(1)_D$. After the $U(1)_D$ is broken down to a $Z_5$ discrete subgroup, the lighter scalar field becomes a SIMP dark matter which has the enhanced $3\rightarrow 2$ annihilation cross section near the resonance of the heavier scalar field. Bounds on the SIMP self-scattering cross section and the relic density can be fulfilled at the same time for perturbative couplings of SIMP. A small gauge kinetic mixing between the SM hypercharge and dark gauge bosons can be used to make SIMP dark matter in kinetic equilibrium with the SM during freeze-out.

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。

↑