期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 10, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2018/10/035
关键词
dark matter experiments; dark matter theory
资金
- National Research Foundation of Korea (NRF) [NRF-2015R1A2A1A05001869]
- National Research Foundation of Korea (NRF) - Ministry of Science and ICT [2017H1D3A1A01014127]
- National Research Foundation of Korea [2017H1D3A1A01014127, 2015R1A2A1A05001869, QP037702] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The physics of the solar dark matter (DM) that are captured and thermalise through the DM-nucleon interaction has been extensively studied. In this work, we consider the leptophilic DM scenario where the DM particles interact exclusively with the electrons through the axial-vector coupling. We investigate relevant phenomenologies in the Sun, including its capture, evaporation and thermalisation, and we calculate the equilibrium distribution using the Monte Carlo methods, rather than adopting a semi-analytic approximation. Based on the analysis, we then determine the minimum testable mass for which the DM-electron coupling strength can be probed via the neutrino observation. Compared to the case of the DM-nucleon interaction, it turns out that minimum detectable mass of the DM-electron interaction is roughly 1 GeV smaller, and a cross section about two orders of magnitude larger is required for the saturation of the annihilation signal.
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