Due to the low nuclear recoils,sub-Ge V dark matter(DM)is usually beyond the sensitivity of the conventional DM direct detection experiments.The boosted and Migdal scattering mechanisms have been proposed as two new c...Due to the low nuclear recoils,sub-Ge V dark matter(DM)is usually beyond the sensitivity of the conventional DM direct detection experiments.The boosted and Migdal scattering mechanisms have been proposed as two new complementary avenues to search for light DM.In this study,we consider the momentum-transfer effect in the DM-nucleus scattering to derive the new bounds on sub-GeV DM for these two scenarios.We show that such an effect is sizable so that the existing bounds on the DM-nucleus scattering cross section can be improved significantly.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.12275134)supported by the National Natural Science Foundation of China(Grant No.12275232)+1 种基金the Natural Science Foundation of Shandong Province(Grant No.ZR2018QA007)supported by the Australian Research Council(Grant Nos.DP190100974,and DP200100150)。
文摘Due to the low nuclear recoils,sub-Ge V dark matter(DM)is usually beyond the sensitivity of the conventional DM direct detection experiments.The boosted and Migdal scattering mechanisms have been proposed as two new complementary avenues to search for light DM.In this study,we consider the momentum-transfer effect in the DM-nucleus scattering to derive the new bounds on sub-GeV DM for these two scenarios.We show that such an effect is sizable so that the existing bounds on the DM-nucleus scattering cross section can be improved significantly.
