University Of Science And Technology Of China

Dark matter is very significant in the modern astrophysics and particle physics.The gravitational interaction of the dark matter plays an important role in the galaxy dy-namic,galaxy cluster and cosmology.Since 1930s,dark matter has been put forward to explain many phenomena including the rotation curve of the galaxy,bullet cluster,cos-mic microwave background and so on.The amazing success of the dark matter theory makes it a baseline in astrophysics research.However,we have no undoubted evidence for the non-gravitational interaction of the dark matter so far.And we know very little about the nature of the dark matter.Thousand theories have been raised to describe the feature of the dark matter.The mass parameter could even range from 10-20eV to several solar mass.Such a big parameter space makes it no possible to test all theory in one experiment.So we can only focus on the theories with good motivation and design different experiments to test it.One of the most popular theory is the Weak Interaction Massive Particles.Such particles could explain the relic density naturally,which is called "WIMP miracle".An-other popular theory is about axion,the gauge boson to explain the strong CP voilation.And also we have many well motivated theories like dark photon,mirror dark mater,plasma dark matter,primary black hole and so on.I will introduce dark matter history,research status,part of dark matter model and corresponding detection method in Section I.In Section ?,we use the AMS-02 and DAMPE electron cosmic ray spectrum to study several different dark matter model.In DAMPE electron spectrum,there is a suspected excess in 1.4 TeV.We have focused on the cascade annihilation dark matter model,the Le-L? and left-right hand symmetry dark matter models to explain the ex-cess.For the cascade annihilation dark matter model,the final leptons are all electrons.We have draw the 2? cross section upper limits in 10-26cm3s-1-10-23cm3s-1 for the dark matter mass in 50 GeV-104 GeV.Assuming a local dark matter subhalo with dis-tance 0.1 kpc and 1.9×107M? total mass,the dark matter with mass?3 TeV,cross section?10-26cm3s-1 and mass ratio nearly 1 could explain the DAMPE electron spec-trum in 1.4 TeV well.For Le-L? model,the final leptons are 1:1 electron and muon.The best fit point for DAMPE electron spectrum are 3053 GeV mediator and 3060 GeV dark matter.The cross section is about 2.34×10-26cm3s-1.In left-right hand symmetry model,the final leptons are 1:1:1 electron,muon and tau.Then the best fit result is 3054 GeV mediator,3060 GeV dark matter,2.98×10-26cm3s-1 cross section.All of three models could explain the 1.4 TeV excess in DAMPE electron spectrum well.We also consider L?-L? model,which could explain the muon anormally magnetic momen-tum.We use AMS-02 electron spectrum to exclude part of the dark matter parameter space in 200 MeV-500 MeV.In Section ?,we have use the measurments of the mass and spin of the supermas-sive black holes to constrain the massive boson in the mass range 10-21eV-10-17eV with the superradiance effects.Our results set a stringent constrain on the small mass range of the boson,which has touched the fuzzy dark matter mass range.Considering the self interaction,we also exclude part of the QCD axion parameters in 10-19eV-10-17eV.In Section ?,we have used hidden sector dark matter model to explain the electron recoil events excess in several keV.According to whether the shielding effects could be neglected or not,both models could explain the data well.For mirror dark matter model,when the cut energy is larger than 4 keV,???10-12,this model could explain the suspected XENON1T low energy electron recoil excess well.For plasma dark matter model,it could explain this excess if the mass of dark electron is 1 MeV,the mass of dark proton and coulping are satisfied(20 GeV,?=6.8× 10-12),(200 GeV,?=2.6×10-11)or(2000 GeV,?=1.4×10-10).We also predict the possible nuclear recoil signal in the future direct experiment.I will make a summary and prospect in Section V.In a nutshell,we have do the research on the different dark matter model based on several experiments.Although we have no undoubted evidence on the nature of dark matter yet,we believe that we could discovery this natural secret in the future with the development on both the experiment and theory.