论文标题
模拟秘密中微子相互作用引起的中微子回声
Simulating neutrino echoes induced by secret neutrino interactions
论文作者
论文摘要
超出标准模型（BSM）以外的新中微子相互作用不仅对粒子物理学，而且对宇宙学和Astroparticle物理学引起了人们的关注。我们从数值上研究了与宇宙中微子背景相互作用的天体中微子的时间延迟分布。使用蒙特卡洛法，我们开发了一个框架，使我们能够模拟高能中微子的时间依赖性能量光谱，这些中微子甚至在途中经历了多个散射，并处理共振能量的横截面的急剧增加。例如，我们关注与标量调解人的秘密中微子相互作用的情况。虽然我们发现对小光学深度的分析结果和仿真结果之间的出色一致性，但我们的仿真使我们甚至可以研究最简单的分析估计值不描述的光学厚案例。我们的模拟用于了解宇宙红移，中微子光谱和风味的影响。这些发展对于探索BSM中微子相互作用将很有用，不仅与当前的中微子检测器（例如Icecube和Super-Kamiokande），还将有助于未来的中微子探测器，例如Icecube-gen2和Hyper-Kamiokande。
New neutrino interactions beyond the Standard Model (BSM) have been of much interest in not only particle physics but also cosmology and astroparticle physics. We numerically investigate the time delay distribution of astrophysical neutrinos that interact with the cosmic neutrino background. Using the Monte Carlo method, we develop a framework that enables us to simulate the time-dependent energy spectra of high-energy neutrinos that experience even multiple scatterings en route and to handle the sharp increase in the cross section at the resonance energy. As an example, we focus on the case of secret neutrino interactions with a scalar mediator. While we find the excellent agreement between analytical and simulation results for small optical depths, our simulations enable us to study even optically-thick cases that are not described by the simplest analytic estimates. Our simulations are used to understand effects of cosmological redshifts, neutrino spectra and flavors. The developments will be useful for probing BSM neutrino interactions with not only current neutrino detectors such as IceCube and Super-Kamiokande but also future neutrino detectors such as IceCube-Gen2 and Hyper-Kamiokande.
