论文标题
直接检测两个希格斯双重doublet和SM的单线扩展
Direct detection of pseudo-Nambu-Goldstone dark matter in a two Higgs doublet plus singlet extension of the SM
论文作者
论文摘要
我们计算出第二个Higgs Doublet（S2HDM）增强的伪 - nambu-goldstone暗物质模型中深色核子散射的领先辐射校正。在此模型中，由于U（1）对称性，在树级上散射黑色核上的黑性散射的横截面在零动量转移的极限下消失。但是，这种对称性被柔和破碎，以使深色粒子质量。结果，在循环水平上出现了非散射散射截面。我们发现，来自深色直接检测实验的当前横截面极限几乎无法限制S2HDM的参数空间。但是，散射横截面的环校正预测可以很好地在未来的直接检测实验的范围内。结果，S2HDM的未来现象学分析应考虑到树级以外的横截面预测以及来自深色 - 摩擦直接检测实验的实验约束。
We calculate the leading radiative corrections to the dark-matter-nucleon scattering in the pseudo-Nambu-Goldstone dark matter model augmented with a second Higgs doublet (S2HDM). In this model, the cross sections for the scattering of the dark-matter on nuclei vanishes at tree-level in the limit of zero momentum-transfer due to a U(1) symmetry. However, this symmetry is softly broken in order to give a mass to the dark-matter particle. As a consequence, non-vanishing scattering cross sections arise at the loop level. We find that the current cross-section limits from dark-matter direct-detection experiments can hardly constrain the parameter space of the S2HDM. However, the loop-corrected predictions for the scattering cross sections can be well within the reach of future direct-detection experiments. As a consequence, future phenomenological analyses of the S2HDM should take into account cross-section predictions beyond tree-level and the experimental constraints from dark-matter direct-detection experiments.
