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arXiv 1503.01500hep-ph
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马约拉纳暗物质与t通道介体的特征

Signatures of Majorana dark matter with t-channel mediators

Mathias Garny, Alejandro Ibarra, Stefan Vogl

摘要:

寻找非引力暗物质信号的主要策略有三种:直接探测、间接探测和对撞机搜索。有趣的是,实验已经达到这三种搜索策略的敏感性,这可能会在不久的将来检测。为了充分利用丰富的实验数据,并为了确认一个可能的暗物质信号,有必要指定的暗物质粒子和介体的标准模型的性质。在本文中,我们专注于一个简化的模型,其中的暗物质粒子是一个马约拉纳费米子耦合到一个轻的标准模型费米子通过汤川耦合的标量介体。我们回顾了这个模型的观测特征,我们讨论了各种搜索策略之间的互补性,重点是在动机良好的情况下,暗物质粒子产生于早期宇宙通过热冻结。

英文摘要:

Three main strategies are being pursued to search for non-gravitational dark matter signals: direct detection, indirect detection and collider searches. Interestingly, experiments have reached sensitivities in these three search strategies which may allow detection in the near future. In order to take full benefit of the wealth of experimental data, and in order to confirm a possible dark matter signal, it is necessary to specify the nature of the dark matter particle and of the mediator to the Standard Model. In this paper, we focus on a simplified model where the dark matter particle is a Majorana fermion that couples to a light Standard Model fermion via a Yukawa coupling with a scalar mediator. We review the observational signatures of this model and we discuss the complementarity among the various search strategies, with emphasis in the well motivated scenario where the dark matter particles are produced in the early Universe via thermal freeze-out.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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