标题： 物质波干涉仪中的中微子背景：对暗物质搜索和超出标准模型物理的影响 显示英文标题

标题： Neutrino backgrounds in matter-wave interferometry: implications for dark matter searches and beyond-Standard Model physics

摘要： 我们对宏观物质波干涉实验中中微子引起的退相干现象进行了全面的理论分析，这些实验旨在寻找暗物质和标准模型之外的物理现象。 我们的计算包括宇宙中微子背景（C$\nu$B）、太阳中微子和反应堆反中微子的贡献，并考虑了在核、原子和宏观长度尺度上的相干散射过程。 在标准模型内，我们发现对于计划中的实验如MAQRO（$s/\sigma_s \sim 10^{-27}$）和地面上的干涉仪如Pino（$s/\sigma_s \sim 10^{-22}$），退相干率可以忽略不计。 然而，这些实验通过轻型矢量媒介子相互作用实现了对标准模型之外的物理现象的竞争力灵敏度，其中C$\nu$B将耦合乘积限制为$g_\nu g_n \lesssim 10^{-17}$，适用于质量低于1 eV的$Z'$。 我们的结果提供了一个理论框架，用于根据中微子相互作用物理来解释物质波干涉测量，并从实验数据中推导出对BSM模型的约束。 显示英文摘要

摘要： We present a comprehensive theoretical analysis of neutrino-induced decoherence in macroscopic matter-wave interferometry experiments designed to search for dark matter and beyond-Standard Model physics. Our calculation includes contributions from the cosmic neutrino background (C$\nu$B), solar neutrinos, and reactor antineutrinos, accounting for coherent scattering processes across nuclear, atomic, and macroscopic length scales. Within the Standard Model, we find negligible decoherence rates for planned experiments such as MAQRO ($s/\sigma_s \sim 10^{-27}$) and terrestrial interferometers like Pino ($s/\sigma_s \sim 10^{-22}$). However, these experiments achieve competitive sensitivity to beyond-Standard Model physics through light vector mediator interactions, with C$\nu$B constraining coupling products to $g_\nu g_n \lesssim 10^{-17}$ for $Z'$ masses below 1 eV. Our results provide a theoretical framework for interpreting matter-wave interferometry measurements in terms of neutrino interaction physics and for deriving constraints on BSM models from experimental data.