Neutral current (NC) measurements play an important role in exploring new physics scenarios at long-baseline neutrino oscillation experiments. We find that combining NC measurements of the proposed Deep Underground Neutrino Experiment (DUNE) with its charged current (CC) measurements enhances the bounds on some of the non-unitarity parameters. Combining DUNE with the T2HK experiment improves the bounds further. We show that even in the averaged out regime of light sterile neutrinos, the NC events are different from the heavy sterile case in the leading order. It is observed that NC measurements at DUNE provide much better constraints on the α ₃₃ parameter than the CC measurements.

中性电流 (NC) 测量在探索长基线中微子振荡实验中的新物理场景方面发挥着重要作用。我们发现，将提议的深地下中微子实验 (DUNE) 的 NC 测量与其充电电流 (CC) 测量相结合，增强了一些非幺正性参数的界限。将 DUNE 与 T2HK 实验相结合，进一步提高了界限。我们表明，即使在轻惰性中微子的平均状态下，NC 事件也不同于领先顺序中的重惰性中微子。据观察，DUNE 的 NC 测量比 CC 测量对α ₃₃参数提供了更好的约束。