论文标题
通过动力学混合的隐藏暗物质偶极时刻的界限
Bounds on Dipole Moments of hidden Dark Matter through kinetic mixing
论文作者
论文摘要
黑暗部门的存在是由理论和现象学上的，由不与已知标准模型力相互作用的弱耦合粒子组成。隐藏的颗粒是暗物质的候选物，可以通过电偶极矩（EDM）和磁偶极矩（MDM）与光子相互作用。我们研究了隐藏扇区的暗物质的可能性，该暗物质是在隐藏的$ u（1）_x $ gauge对称性下可以在循环级别与光子相互作用的。我们用核评估了隐藏的狄拉克费米的散射横截面，并为偶极矩设定边界。利用Xenon1t实验的结果直接检测暗物质，我们获得了电磁偶极矩$（μ_χ）$（μ_的$ $m_χ= 100 $ gev：$ 1.93448 \ times 10^{ - 8}μ_B\ leqμ_B\ leqμ_的1.9496 \ leq 1.9496 \ $ 8} $（d_χ）：3.3204 \ times 10^{ - 23} e \ mbox {。} cm \ leqd_χ\ leq 3.3464 \ times 10^{ - 23} e \ mbox {。} cm $。利用偶极时刻的存在条件，我们限制了动力学混合参数$ 3 \ times 10^{ - 3} \ leqleqε\ leq 10^{ - 2} $和隐藏的$ u（1）_x $ gauge boson的质量，其范围为5 gev $ \ leq $ \ leq m_x \ leq m_x \ leq $ 9 gev。我们的结果补充了以前的工作，并且在LHC的检测能力范围内。
The existence of dark sectors, consisting of weakly-coupled particles that do not interact with the known Standard Model forces, is theoretically and phenomenologically motivated. The hidden particles are candidates for Dark Matter and can interact with photon through electric dipole moment (EDM) and magnetic dipole moment (MDM). We investigate the possibility a hidden sector's Dark Matter which is charged under a hidden $U(1)_X$ gauge symmetry can interact with photon at loop level. We evaluate the scattering cross section of hidden Dirac fermion with nuclei and set bounds for dipole moment. Using the results of the XENON1T experiment for direct detection of Dark Matter, we get bounds of electromagnetic dipole moment $(μ_χ)$ for mass $m_χ=100$ GeV : $ 1.93448 \times 10^{-8}μ_B \leq μ_χ\leq 1.9496 \times 10^{-8}μ_B$ and electric dipole moment $(d_χ): 3.3204 \times 10^{-23}e\mbox{.}cm \leq d_χ\leq 3.3464 \times 10^{-23}e\mbox{.}cm$. Using the condition of the existence of dipole moment we constraint the kinetic mixing parameter $ 3\times 10^{-3} \leq ε\leq 10^{-2}$ and the mass of the hidden $U(1)_X$ gauge boson to be in the range of 5 GeV $\leq m_X \leq$ 9 GeV. Our results complement previous works and are within detection capability of LHC.
