arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.01237hep-phastro-ph.CO
收藏

来自即将到来的中微子望远镜的鲁棒极限和对最小暗物质模型的影响

Robust Limits from Upcoming Neutrino Telescopes and Implications on Minimal Dark Matter Models

S. Basegmez du Pree, C. Arina, A. Cheek, A. Dekker, M. Chianese, S. Ando

阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

中微子望远镜的实验发展极大地提高了它们限制暗物质湮灭截面的能力。本文采用角功率谱分析方法，利用中微子望远镜探测银河系和河外暗物质信号。我们首先推导出下一代中微子望远镜的灵感来自KM 3 NeT的预测。我们强调，这样的分析是不太敏感的暗物质密度分布的选择。值得注意的是，预计的灵敏度提高了一个数量级以上，相对于现有的限制，通过假设的Burkert暗物质密度分布描述的星系晕。其次，我们分析了标准模型的最小扩展，这将是最大限度地探测下一代中微子望远镜。作为基准方案，我们考虑狄拉克暗物质在$s$ -和$t$ -通道模型与矢量和标量介质。我们遵循一个全球性的方法，检查所有相关的补充实验约束。我们发现，中微子望远镜将能够竞争性地探测参数空间的重要部分。有趣的是，无异常的$L_μ-L_τ$模型可以在通过冻结机制实现遗迹丰度的区域进行探索。

英文摘要：

Experimental developments in neutrino telescopes are drastically improving their ability to constrain the annihilation cross-section of dark matter. In this paper, we employ an angular power spectrum analysis method to probe the galactic and extra-galactic dark matter signals with neutrino telescopes. We first derive projections for a next generation of neutrino telescope that is inspired by KM3NeT. We emphasise that such analysis is much less sensitive to the choice of dark matter density profile. Remarkably, the projected sensitivity is improved by more than an order of magnitude with respect to the existing limits obtained by assuming the Burkert dark matter density profile describing the galactic halo. Second, we analyse minimal extensions to the Standard Model that will be maximally probed by the next generation of neutrino telescopes. As benchmark scenarios, we consider Dirac dark matter in $s$- and $t$-channel models with vector and scalar mediators. We follow a global approach by examining all relevant complementary experimental constraints. We find that neutrino telescopes will be able to competitively probe significant portions of parameter space. Interestingly, the anomaly-free $L_μ-L_τ$ model can potentially be explored in regions where the relic abundance is achieved through freeze-out mechanism.

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。

↑