Nucleon Consumption and Mass-Energy Conversion Induced by Dark Matter
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866929638753697792 |
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| author | Ge, Shao-Feng Ma, Xiao-Dong |
| author_facet | Ge, Shao-Feng Ma, Xiao-Dong |
| contents | We propose the nucleon consumption induced by dark matter (DM) as a new scenario to overcome the energy threshold of direct detection. It can be realized with proton ($χ+ p \rightarrow χ+ \ell^+$) or neutron ($χ+ n \rightarrow χ+ ν$) target. Both effective operators and concrete models are provided to illustrate the idea. Since the initial DM and nucleon velocity is only $10^{-3}$ and $1/4$ of the speed of light, respectively, the cross section and hence event rate are determined by the involved particle masses and not affected by the nucleon Fermi motion. Of the two realizations, the proton consumption has richer phenomena with both charged lepton and the daughter nuclei de-excitation to allow double or even triple coincidence to significantly suppress the background. We also illustrate the projected sensitivities at DM and neutrino experiments such as PandaX-4T, DUNE, JUNO, and Hyper-K. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_00445 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Nucleon Consumption and Mass-Energy Conversion Induced by Dark Matter Ge, Shao-Feng Ma, Xiao-Dong High Energy Physics - Phenomenology High Energy Physics - Experiment We propose the nucleon consumption induced by dark matter (DM) as a new scenario to overcome the energy threshold of direct detection. It can be realized with proton ($χ+ p \rightarrow χ+ \ell^+$) or neutron ($χ+ n \rightarrow χ+ ν$) target. Both effective operators and concrete models are provided to illustrate the idea. Since the initial DM and nucleon velocity is only $10^{-3}$ and $1/4$ of the speed of light, respectively, the cross section and hence event rate are determined by the involved particle masses and not affected by the nucleon Fermi motion. Of the two realizations, the proton consumption has richer phenomena with both charged lepton and the daughter nuclei de-excitation to allow double or even triple coincidence to significantly suppress the background. We also illustrate the projected sensitivities at DM and neutrino experiments such as PandaX-4T, DUNE, JUNO, and Hyper-K. |
| title | Nucleon Consumption and Mass-Energy Conversion Induced by Dark Matter |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2406.00445 |