论文标题
由于地球核心在Icecube的地球核心腐烂而导致的TEV深色颗粒的测量
Measurement of TeV dark particles due to decay of heavy dark matter in the earth core at IceCube
论文作者
论文摘要
在本文中，假定存在两种暗物质：一个沉重的暗物质粒子（HDM），其质量（TEV）是在早期宇宙中产生的，而较轻的暗物质粒子（LDM）是由于HDM的衰减而是相对论的。 HDMS被地球捕获，衰减至高能LDM，这些颗粒可以通过km $^3 $中微子望远镜（例如Icecube检测器）来测量。 $ z^{\ prime} $ Portal暗物质模型是由LDMS通过由重量规玻色子$ z^{\ prime} $介导的中性电流相互作用来与核相互作用的。随着HDMS和Z $^{\ prime} $群体的衰减寿命不同，由IceCube测量的LDMS的事件率在1 TEV和100 TEV之间的能量范围内进行了评估。根据ICECUBE数据，LDM通量的上限估计为90 \％c.l。在ICECUBE。最后，证明可以在IceCube的o（1TEV）和O（10TEV）的能量范围内直接检测到LDM，并使用$ M_ {Z^{\ prime}} \ Lessim 500 Gev $和$τ_Dist\ ys $ τ_ϕ \ sillesim 10^{21}} $ s。
In the present paper, it is assumed that there exist two species of dark matter: a heavy dark matter particle (HDM) with the mass of O(TeV) which is generated in early universe and a lighter dark matter particle (LDM) which is a relativistic product due to the decay of HDM. HDMs, captured by the earth, decay to high energy LDMs, and these particles can be measured by km$^3$ neutrino telescopes, like the IceCube detector. A $Z^{\prime}$ portal dark matter model is taken for LDMs to interact with nuclei via a neutral current interaction mediated by a heavy gauge boson $Z^{\prime}$. With the different lifetimes of decay of HDMs and Z$^{\prime}$ masses, the event rates of LDMs, measured by IceCube, are evaluated in the energy range between 1 TeV and 100 TeV. According to the IceCube data, the upper limit for LDM fluxes is estimated at 90\% C.L. at IceCube. Finally, it is proved that LDMs could be directly detected in the energy range betwen O(1TeV) and O(10TeV) at IceCube with $m_{Z^{\prime}} \lesssim 500 GeV$ and $τ_ϕ \lesssim 10^{21}$ s.
