Inelastic dark matter scattering off Thallium cannot save DAMA
Inelastic dark matter scattering off Thallium cannot save DAMA
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DOI：
10.1088/1475-7516/2021/10/070
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发表时间：
2021-02
影响因子：
6.4
通讯作者：
S. Jacobsen;K. Freese;Chris Kelso;Pearl Sandick;Patrick Stengel
中科院分区：
文献类型：
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作者：
S. Jacobsen;K. Freese;Chris Kelso;Pearl Sandick;Patrick Stengel
我们研究的兼容性所观察到的DAMA调制信号与暗物质（DM）的非弹性散射的0.1%的铊（Tl）掺杂剂在DAMA。在这项工作中，我们测试是否存在参数空间区域，其中TI解释与DAMA的最新数据具有良好的拟合，以及这些区域是否与其他直接检测实验的最新约束兼容。此前，Chang等人在2010年[1]提出了DAMA数据的Tl解释，最近（2019年）DAMA/LIBRA合作[2]发现Tl非弹性散射参数空间中的区域与无调制假设相差超过10σ。我们已经扩大了他们的工作，通过测试是否非弹性DM-Tl散射的参数空间区域给出了一个很好的适合最新的DAMA数据生存的限制，由一个DM信号的缺乏XENON 1 T和CRESST-II。此外，我们还测试了这些区域如何随着不确定性的主要来源而变化：从未直接测量过的Tl淬灭因子，以及DM分布中的天体物理不确定性。我们的结论是，非弹性DM散射T1不能解释DAMA数据的光从其他实验的零结果。
We study the compatibility of the observed DAMA modulation signal with inelastic scattering of dark matter (DM) off of the 0.1% Thallium (Tl) dopant in DAMA. In this work we test whether there exist regions of parameter space where the Tl interpretation gives a good fit to the most recent data from DAMA, and whether these regions are compatible with the latest constraints from other direct detection experiments. Previously, Chang et al. in 2010 [1], had proposed the Tl interpretation of the DAMA data, and more recently (in 2019) the DAMA/LIBRA collaboration [2] found regions in parameter space of Tl inelastic scattering that differ by more than 10σ from a no modulation hypothesis. We have expanded upon their work by testing whether the regions of parameter space where inelastic DM-Tl scattering gives a good fit to the most recent DAMA data survive the constraints placed by the lack of a DM signal in XENON1T and CRESST-II. In addition, we have tested how these regions change with the main sources of uncertainty: the Tl quenching factor, which has never been measured directly, and the astrophysical uncertainties in the DM distribution. We conclude that inelastic DM scattering off Tl cannot explain the DAMA data in light of null results from other experiments.