锗上反应堆反中微子CE$ν$NS：CONUS+与TEXONO作为通往标准模型与超越标准模型物理的新门户
Reactor antineutrinos CE$ν$NS on germanium: CONUS+ and TEXONO as a new gateway to SM and BSM physics
AI总结：
本文利用CONUS+高精度数据与TEXONO限制，在锗上验证低能CE$ν$NS并改进对弱混合角、中微子电磁性质及BSM相互作用的约束，结合弹性中微子-电子散射获得电子中微子毫电荷最佳限制，强化CE$ν$NS作为精密检验工具的作用。
摘要：
相干弹性中微子-原子核散射（CE$ν$NS）是探测标准模型及超越标准模型（BSM）性质的关键过程。继COHERENT合作组首次探测到该过程之后，近期基于反应堆的实验为完善我们当前的理解提供了独特机会。特别是，来自CONUS+的高精度数据与TEXONO的强有力限制相结合，不仅在低能区验证了CE$ν$NS过程，还对弱混合角、中微子电磁性质（包括电荷半径、毫电荷和磁矩）以及非标准相互作用和轻媒介提供了改进的约束。我们还考察了弹性中微子-电子散射的作用，该过程在某些BSM场景中变得重要，并使我们能够获得电子中微子毫电荷的最佳限制。通过结合反应堆和更高能量的散裂中子源测量，本工作强化了CE$ν$NS作为检验标准模型及超越标准模型物理的精密工具的地位。
英文摘要：
Coherent elastic neutrino-nucleus scattering (CE$ν$NS) is a key process for probing Standard Model and beyond the Standard Model (BSM) properties. Following its first detection by the COHERENT Collaboration, recent reactor-based experiments provide a unique opportunity to refine our current understanding. In particular, the high-precision data from CONUS+, combined with the strong bounds from TEXONO, not only validate the CE$ν$NS process at low energies but also provide improved constraints on the weak mixing angle, neutrino electromagnetic properties (including the charge radius, millicharge, and magnetic moment), and nonstandard interactions and light mediators. We also examine the role of elastic neutrino-electron scattering, which gains significance in certain BSM scenarios and allows us to obtain the best limit for the millicharge of the electron neutrinos. By combining reactor and higher-energy spallation neutron source measurements, this work strengthens CE$ν$NS as a precision tool for testing the Standard Model and beyond.
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