论文标题
Xenon1t电子后坐力多余的EFT解释：中微子和暗物质
EFT Interpretation of XENON1T Electron Recoil Excess: Neutrinos and Dark Matter
论文作者
论文摘要
我们在标量延伸的暗物质有效场理论中仔细检查了Xenon1T电子后坐力多余。我们在一般设置中以及更具体的，最近提出的变体中都与瘦素$ Z_2 $ -ODD介体相遇，以各种天体物理和实验室的约束面对面。后者还通过被抑制的$ z_2 $打破为轻质卵子提供了质量，该结构与观察到的过量的性质非常吻合，而离散对称性则导致非标准的深色 - 黑暗 - 摩擦相互作用。我们发现，与中微子和电子质量相关的中微子相互作用可以解释多余的电子散射，并不会导致统计学上的显着改善。我们分析了异常首选的参数空间，并找到只能在参数空间的某些角度避免的严重约束。可以通过新标量扇区的后期过渡来规避来自大键核合成的电子耦合的潜在问题界限。
We scrutinize the XENON1T electron recoil excess in the scalar-singlet-extended dark matter effective field theory. We confront it with various astrophysical and laboratory constraints both in a general setup and in the more specific, recently proposed, variant with leptophilic $Z_2$-odd mediators. The latter also provide mass to the light leptons via suppressed $Z_2$ breaking, a structure that is well fitting with the nature of the observed excess and the discrete symmetry leads to non-standard dark-matter interactions. We find that the excess can be explained by neutrino--electron interactions, linked with the neutrino and electron masses, while dark-matter--electron scattering does not lead to statistically significant improvement. We analyze the parameter space preferred by the anomaly and find severe constraints that can only be avoided in certain corners of parameter space. Potentially problematic bounds on electron couplings from Big-Bang Nucleosynthesis can be circumvented via a late phase transition in the new scalar sector.
