论文标题
探测$ν_{r} $ - philic $ z'$在Dune附近检测器
Probing the $ν_{R}$-philic $Z'$ at DUNE near detectors
论文作者
论文摘要
我们考虑一个隐藏的$ u（1）$量规对称性，只有右手中微子（$ν_{r} $）被收取。相应的量规玻色子称为$ν_{r} $ - Philic $ Z'$。尽管在树级上没有直接量规耦合到普通物质，但通过左右中微子混合，循环引起的$ν_{r} $ - Philic $ Z'U的耦合可能是其实验可访问性的原因。 $ν_{r} $ - Philic $ Z'U的一个重要特征是，它与中微子的耦合通常比其与带电的Leptons and Quarks的耦合大得多，因此为未来的中性粉实验（例如Dune）提供了一个特别有趣的场景。我们考虑了两种方法来探测$ν_{r} $ - philic $ z'Un in Dune在Dune附近探测器通过（i）搜索$ z'$ decay信号，以及（ii）$ z'$ boson介导的Elastic Neutreino-Electron-Boson介导的Elastic Neutreino-Electron-Boson介导的精确测量。我们表明，前者的灵敏度与以前的梁垃圾场实验相当或更好，而后者将大大提高大型中微子耦合的电流极限。
We consider a hidden $U(1)$ gauge symmetry under which only the right-handed neutrinos ($ν_{R}$) are charged. The corresponding gauge boson is referred to as the $ν_{R}$-philic $Z'$. Despite the absence of direct gauge couplings to ordinary matter at tree level, loop-induced couplings of the $ν_{R}$-philic $Z'$ via left-right neutrino mixing can be responsible for its experimental accessibility. An important feature of the $ν_{R}$-philic $Z'$ is that its couplings to neutrinos are generally much larger than its couplings to charged leptons and quarks, thus providing a particularly interesting scenario for future neutrino experiments such as DUNE to probe. We consider two approaches to probe the $ν_{R}$-philic $Z'$ at DUNE near detectors via (i) searching for $Z'$ decay signals, and (ii) precision measurement of elastic neutrino-electron scattering mediated by the $Z'$ boson. We show that the former will have sensitivity comparable to or better than previous beam dump experiments, while the latter will improve current limits substantially for large neutrino couplings.
