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Li, B; Zhou, YF; Zhou, YF (reprint author), Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Direct Detection of Dark Matter with Resonant Annihilation
Source PublicationCOMMUNICATIONS IN THEORETICAL PHYSICS
Language英语
KeywordResonant Annihilation Relic Density Neutrino Background Dm Direct Detection Experiments
AbstractIn the scenario where the dark matter (DM) particles chi(chi) over bar pair annihilate through a resonance particle R, the constraint from DM relic density makes the corresponding cross section for DM-nuclei elastic scattering extremely small, and can be below the neutrino background induced by the coherent neutrino-nuclei scattering, which makes the DM particle beyond the reach of the conventional DM direct detection experiments. We present an improved analytical calculation of the DM relic density in the case of resonant DM annihilation for s- and p-wave cases and invesitgate the condition for the DM-nuclei scattering cross section to be above the neutrino background. We show that in Higgs-portal type models, for DM particles with s-wave annihilation, the spin-independent DM-nucleus scattering cross section is proportional to Gamma(R)/m(R), the ratio of the decay width and the mass of R. For a typical DM particle mass similar to 50 GeV, the condition leads to Gamma(R)/m(R) greater than or similar to O(10(-4)). In p-wave annihilation case, the spin-independent scattering cross section is insensitive to Gamma(R)/m(R), and is always above the neutrino background, as long as the DM particle is lighter than the top quark. The real singlet DM model is discussed as a concrete example.
2015
Volume64Issue:1Pages:119-126
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNational Basic Research Program of China (973 Program) [2010CB833000] ; National Basic Research Program of China (973 Program) [2010CB833000] ; National Basic Research Program of China (973 Program) [2010CB833000] ; National Basic Research Program of China (973 Program) [2010CB833000] ; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084, 11335012] ; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084, 11335012] ; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084, 11335012] ; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084, 11335012] ; Project of Knowledge Innovation Program (PKIP) of the Chinese Academy of Science ; Project of Knowledge Innovation Program (PKIP) of the Chinese Academy of Science ; Project of Knowledge Innovation Program (PKIP) of the Chinese Academy of Science ; Project of Knowledge Innovation Program (PKIP) of the Chinese Academy of Science
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/20936
Collection理论物理所科研产出_SCI论文
Corresponding AuthorZhou, YF (reprint author), Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Li, B,Zhou, YF,Zhou, YF . Direct Detection of Dark Matter with Resonant Annihilation[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2015,64(1):119-126.
APA Li, B,Zhou, YF,&Zhou, YF .(2015).Direct Detection of Dark Matter with Resonant Annihilation.COMMUNICATIONS IN THEORETICAL PHYSICS,64(1),119-126.
MLA Li, B,et al."Direct Detection of Dark Matter with Resonant Annihilation".COMMUNICATIONS IN THEORETICAL PHYSICS 64.1(2015):119-126.
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