Predicted Modulated Differential Rates for Direct WIMP Searches at Low Energy Transfers |
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Authors: | JDVergados |
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Institution: | Kavli Institute for Theoretical Physics China (KITPC), Institute of Theoretical Physics, Chinese Academy of Science, Beijing 100190, China |
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Abstract: | The differential event rate for direct detection of dark matter,both the time averaged and the modulated one due to the motion of the Earth,are discussed.The calculations focus on relatively light cold dark matter candidates (WIMP) and low energy transfers.It is shown that for sufficiently light WIMPs the extraction of relatively large nucleon cross sections is possible.Furthermore for some WIMP masses the modulation amplitude may change sign,meaning that,in such a case,the maximum rate may occur six months later than naively expected.This effect can be exploited to yield information about the mass of the dark matter candidate,if and when the observation of the modulation of the event rate is established. |
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Keywords: | dark matter WIMP direct detection WIMP-nucleus scattering event rates modulation |
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