The new interaction suggested by the anomalous 8Be transition sets a rigorous constraint on the mass range of dark matter
The new interaction suggested by the anomalous 8Be transition sets a rigorous constraint on the mass range of dark matter
复制标题
反常 8Be 跃迁所暗示的新相互作用对暗物质的质量范围设定了严格的限制
DOI：
10.1140/epjc/s10052-016-4561-3
复制
发表时间：
2016
影响因子：
4.4
通讯作者：
Li Xue-Qian
中科院分区：
文献类型：
--
作者：
Jia Lian-Bao;Li Xue-Qian
The WIMPs are considered to belong to the favorable dark matter (DM) candidates, but the upper bounds on the interactions between DM and standard model (SM) particles obtained by the upgraded facilities of DM direct detection get lower and lower. Researchers turn their attention to the search for less massive DM candidates, i.e. light dark matter of the MeV scale. The recently measured anomalous transition inBe suggests that there exists a vectorial boson which may mediate the interaction between DM and SM particles. Based on this scenario, we combine the relevant cosmological data to constrain the mass range of DM, and we have found that there exists a model parameter space where the requirements are satisfied, a range of16.7 MeV for scalar DM, andMeV for vectorial DM is demanded. Then a possibility of directly detecting such light DM particles via DM–electron scattering is briefly studied in this framework.
