论文标题
与陆地中微子实验相遇的SMEFT中的非标准相互作用
Non-standard interactions in SMEFT confronted with terrestrial neutrino experiments
论文作者
论文摘要
标准模型有效场理论（SMEFT）为研究中微子非标准相互作用（NSIS）提供了一个系统的独立框架。我们研究了正在进行的中微子振荡实验T2K，NO $ν$ A，Daya Bay，Double Chooz和Reno在SMEFT框架中的限制能力。在不同的有效场理论和在不同尺度上运行的重新归一化组之间提供了完全考虑的匹配，从而填补了低能中微子振荡实验与紫外线量表之间的差距。我们首先用自上而下的方法在简化的标量leptokark模型中说明了我们的方法，与对撞机研究相比，从中微子振荡实验中显示了更严格的约束。然后，我们对单个尺寸-6 SMEFT运算符进行自下而上的研究，并在中微子实验中找到NSIS，当时Wilson系数固定在Unity时，以$ \ sim $ 20 TEV敏感。我们还研究了紫外线量表的多个运算符之间的相关性，发现与仅考虑一个操作员相比，它可以通过几个数量级来改变SMEFT操作员对SMEFT操作员的约束。此外，我们发现加速器和反应堆中微子实验对不同的SMEFT算子敏感，这突出了两种实验类型的互补性。
The Standard Model Effective Field Theory (SMEFT) provides a systematic and model-independent framework to study neutrino non-standard interactions (NSIs). We study the constraining power of the on-going neutrino oscillation experiments T2K, NO$ν$A, Daya Bay, Double Chooz and RENO in the SMEFT framework. A full consideration of matching is provided between different effective field theories and the renormalization group running at different scales, filling the gap between the low-energy neutrino oscillation experiments and SMEFT at the UV scale. We first illustrate our method with a top-down approach in a simplified scalar leptoquark model, showing more stringent constraints from the neutrino oscillation experiments compared to collider studies. We then provide a bottom-up study on individual dimension-6 SMEFT operators and find NSIs in neutrino experiments already sensitive to new physics at $\sim$20 TeV when the Wilson coefficients are fixed at unity. We also investigate the correlation among multiple operators at the UV scale and find it could change the constraints on SMEFT operators by several orders of magnitude compared with when only one operator is considered. Furthermore, we find that accelerator and reactor neutrino experiments are sensitive to different SMEFT operators, which highlights the complementarity of the two experiment types.
