We study the impact of the coupling of neutrinos with a new light neutral gauge boson, Z′, with a mass of less than 500MeV in FASERν experiment. Scenarios in which a light gauge boson is coupled to neutrinos are motivated within numerous contexts which are designed to explain various anomalies in particle physics and cosmology. This interaction leads to a new decay mode for charged mesons to a light lepton plus neutrino and Z′, (M ⁺ → l ⁺ νZ′), followed by the subsequent decay of Z′ into the pair of neutrino and anti-neutrino, (). FASERν, the Forward Search Experiment at the Large Hadron Collider, has the potential to detect collider neutrinos for the first time. In particular, the FASERν emulsion detector will provide the opportunity to detect τ-neutrinos and to measure their energies. Using this ability of FASERν emulsion detector, we investigate the potential of FASERν experiment and the proposed upgraded version of this experiment, FASER2ν, to constrain the coupling of a neutrino with the light gauge boson.

我们在 FASER ν实验中研究了中微子与质量小于 500MeV的新轻中性规范玻色子Z '耦合的影响。轻量级玻色子与中微子耦合的场景是在许多旨在解释粒子物理学和宇宙学中的各种异常的背景下激发的。这种相互作用导致带电介子的新衰变模式为轻轻子加中微子和Z '，（M ⁺ → l ⁺ νZ '），随后Z '衰变成一对中微子和反中微子，（）。FASER ν ，大型强子对撞机的前向搜索实验，有可能首次探测到对撞机中微子。特别是，FASER ν乳剂探测器将提供探测τ中微子和测量它们能量的机会。使用FASER的这种能力ν乳液探测器，我们调查FASER的潜在ν实验，这个实验，FASER2所提出的升级版ν，来约束中微子的耦合与光规范玻色子。