论文标题

重新审视的伪-Nambu Goldstone暗物质模型中的Electroweak校正

Electroweak Corrections in a Pseudo-Nambu Goldstone Dark Matter Model Revisited

论文作者

Glaus, Seraina, Mühlleitner, Margarete, Müller, Jonas, Patel, Shruti, Römer, Tizian, Santos, Rui

论文摘要

到目前为止,只有间接证据证明存在暗物质,大量实验旨在通过散射暗物质颗粒在原子核上直接检测暗物质。为了正确解释和识别暗物质成分的潜在性质,对暗物质 - 核子散射的横截面的高阶校正非常重要,特别是在树级横截面可忽略不计的模型中。在这项工作中,我们将电子校正校正到模型中的暗物质核子散射横截面,其中伪nambu-goldstone玻色子是暗物质候选者。文献中已经存在的两个计算,应用了不同的方法,从而在参数空间的某些区域中为横截面带来了不同的最终结果,从而导致我们重做计算并分析两种方法以阐明情况。我们进一步更新了实验约束,并检查参数空间的区域,其中横截面位于中微子地板上方,但只能在远的未来进行探测。

Having so far only indirect evidence for the existence of Dark Matter a plethora of experiments aims at direct detection of Dark Matter through the scattering of Dark Matter particles off atomic nuclei. For the correct interpretation and identification of the underlying nature of the Dark Matter constituents higher-order corrections to the cross section of Dark Matter-nucleon scattering are important, in particular in models where the tree-level cross section is negligibly small. In this work we revisit the electroweak corrections to the dark matter-nucleon scattering cross section in a model with a pseudo Nambu-Goldstone boson as the Dark Matter candidate. Two calculations that already exist in the literature, apply different approaches resulting in different final results for the cross section in some regions of the parameter space leading us to redo the calculation and analyse the two approaches to clarify the situation. We furthermore update the experimental constraints and examine the regions of the parameter space where the cross section is above the neutrino floor but which can only be probed in the far future.

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