论文标题
中微子非标准与U和D夸克的任意耦合的相互作用
Neutrino Non-standard Interactions with arbitrary couplings to u and d quarks
论文作者
论文摘要
我们在中微子和物质场之间引入了一个非标准中性电流相互作用（NSI）的模型，并与上下夸克建立了任意耦合。该模型基于新的$ u（1）$量规对称性，其浅量规玻色子与光子混合。我们表明，与$ u $和$ d $ quarks的耦合可以具有一个比率，以使NSI对连贯的弹性中微子核核散射（CE $ν$ ns）振幅消失，放松CE $ν$ ns实验的NSI对NSI的限制。另外，可以拟合MUON的异常磁偶极矩的测量值与标准模型预测的偏差。我们模型上最有限的限制是从NA48/2和NA64进行的，对新量规玻色的衰减和$ e^-e^+$和隐形粒子的衰减。我们表明，可以通过将新的量规玻色子的衰减向新的轻量标量开放，最终腐烂到$ e^ - e^+$对，可以放松这些界限。我们表明，有一些范围可以导致$（g -2）_μ$异常的解决方案和$ε_{μμ} =ε_{ττ} $的值，足够大，可以通过未来的太阳能中源实验来探测。
We introduce a model for Non-Standard neutral current Interaction (NSI) between neutrinos and the matter fields, with an arbitrary coupling to the up and down quarks. The model is based on a new $U(1)$ gauge symmetry with a light gauge boson that mixes with the photon. We show that the couplings to the $u$ and $d$ quarks can have a ratio such that the contribution from NSI to the Coherent Elastic Neutrino-Nucleus Scattering (CE$ν$NS) amplitude vanishes, relaxing the bound on the NSI from the CE$ν$NS experiments. Additionally, the deviation of the measured value of the anomalous magnetic dipole moment of the muon from the standard-model prediction can be fitted. The most limiting constraints on our model come from the search for the decay of the new gauge boson to $e^-e^+$ and invisible particles, carried out by NA48/2 and NA64, respectively. We show that these bounds can be relaxed by opening up the decay of the new gauge boson to new light scalars that eventually decay into the $e^- e^+$ pairs. We show that there are ranges that can lead to both a solution to the $(g - 2)_μ$ anomaly and values of $ε_{μμ} = ε_{ττ}$ large enough to be probed by future solar neutrino experiments.
