首页|An improved bound on accelerated light dark matter
An improved bound on accelerated light dark matter
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Light(sub-GeV)dark matter has gained increasing interest in terms of direct detection.Accelerated dark matter is a promising candidate that can generate detectable nuclear recoil energy within the sub-GeV range.Because of the large kinetic energy,its interactions with the nucleus are predominantly governed by inelastic scattering,including quasi-elastic and deep inelastic scat-tering.In this work,we calculated the inelastic effects in dark matter-Earth scattering mediated by a vector particle.Our analysis revealed that the impact of inelastic scattering relies on the mediator mass and the kinetic energy spectrum of dark matter.The results exhibited considerable disparity:the upper bounds of the exclusion limit for the spin-independent cross-section between accelerated dark matter and nuclei via a heavy mediator differ by several tens of times when inelastic scattering is considered.
accelerated dark matterinelastic scatteringdirect detection experiment
Liangliang Su、Lei Wu、Bin Zhu
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Department of Physics and Institute of Theoretical Physics,Nanjing Normal University,Nanjing 210023,China
School of Physics,Yantai University,Yantai 264005,China
National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China
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