The nature of dark matter is one of the greatest mysteries in modern physics and astronomy.A wide variety of experiments have been carried out worldwide to search for the evidence of particle dark matter.Chinese physi...The nature of dark matter is one of the greatest mysteries in modern physics and astronomy.A wide variety of experiments have been carried out worldwide to search for the evidence of particle dark matter.Chinese physicists started experimental search for dark matter about ten years ago,and have produced results with high scientific impact.In this paper,we present an overview of the dark matter program in China,and discuss recent results and future directions.展开更多
Although weakly interacting massive particle （WIMP） scenario is very well motivated, it is not guaran- teed to be the truth. It is important to keep mind open and consider other well-motivated scenarios. In this pap...Although weakly interacting massive particle （WIMP） scenario is very well motivated, it is not guaran- teed to be the truth. It is important to keep mind open and consider other well-motivated scenarios. In this paper, we briefly review several possible non-WIMP dark matter （DM） candidates. First, we discuss details on asymmetric DM models, in which the baryon asymmetry in standard model sector is related to the asymmetry in DM sector. We discuss how DM relic abundance is determined in such models. Also we cover the possible interesting ex- perimental signatures induced by its asymmetric nature. Then we consider ultralight DM candidates, i.e., axion and dark photon. In such scenarios, DM should be treated as a coherently oscillating background, instead of each individual particle. Searching strategies for such DM candidates is very different than those in conventional DM models. We discuss several interesting experiments looking for these ultralight particles. We also cover interesting subtleties encountered in those experiments.展开更多
基金The authors thank Prof,Qian Yue and Dr.Litao Yang from Tsinghua University,and also appreciate Prof.Jin Chang frorm Purple Mountain Obeservatory for their generous help with the content of this paper.This work was supported in part by the Double First Class plan of the Shanghai Jiao Tong University,the Koy Laboratory for Particle Physics and Cosmology,Ministry of Education,and the Chinese Academy of Sciences Center for Ex-cellence in Particle Physics.We also thank supportse from the Na-tiounal Natural Selenee Foundaution of China,Ministry of Selenee and Technology,Ofice of Science and Technology,Shanghai Municipal Government,and the Hongkong Hongwen Foundation and Tencent Punlaliu in Chia.
文摘The nature of dark matter is one of the greatest mysteries in modern physics and astronomy.A wide variety of experiments have been carried out worldwide to search for the evidence of particle dark matter.Chinese physicists started experimental search for dark matter about ten years ago,and have produced results with high scientific impact.In this paper,we present an overview of the dark matter program in China,and discuss recent results and future directions.
文摘Although weakly interacting massive particle （WIMP） scenario is very well motivated, it is not guaran- teed to be the truth. It is important to keep mind open and consider other well-motivated scenarios. In this paper, we briefly review several possible non-WIMP dark matter （DM） candidates. First, we discuss details on asymmetric DM models, in which the baryon asymmetry in standard model sector is related to the asymmetry in DM sector. We discuss how DM relic abundance is determined in such models. Also we cover the possible interesting ex- perimental signatures induced by its asymmetric nature. Then we consider ultralight DM candidates, i.e., axion and dark photon. In such scenarios, DM should be treated as a coherently oscillating background, instead of each individual particle. Searching strategies for such DM candidates is very different than those in conventional DM models. We discuss several interesting experiments looking for these ultralight particles. We also cover interesting subtleties encountered in those experiments.
