论文标题
来自borexino测量的精炼限制，$ z'$ - 玻色子耦合到$l_μ$ - $l_τ$当前
Refining constraints from Borexino measurements on a light $Z'$-boson coupled to $L_μ$-$L_τ$ current
论文作者
论文摘要
FNAL最近对$（G-2）_μ$ MUON异常的确认为有力的证据证明了MUON部门中标准模型以外的新物理可能存在。因此，值得重新审视有关模型的现有实验限制，暗示了对异常的理论一致解释。在这项工作中，我们指出，考虑到在中微子领域具有新的具有新风味敏感耦合的任何模型的模型上，占太阳中微子波数据包（质量状态）之间相干性的丧失至关重要。通过考虑到这种效果，并更准确地考虑了$^7 $是太阳中微子的相互作用速率的孔子测量的实验约束，我们纠正了先前对Light $ z'$ to $l_μ$ - $l_μ$-L_τ$的耦合的限制 - 与Muon $（g-2）$（g-2）_ $ $ $ $ $相关。
The recent confirmation by FNAL of the $(g-2)_μ$ muon anomaly gives strong evidence for the possible existence of new physics beyond the Standard Model in the muon sector. Thus it is worthy to revisit the existing experimental constraints on models suggesting theoretically consistent explanations of the anomaly. In this work, we point out that accounting for the loss of coherence between the wave packets(mass states) of solar neutrinos is important for setting limits on any model with new flavor-sensitive couplings in the neutrino sector. By taking into account this effect and considering more accurately the experimental constraints from the BOREXINO measurement of the $^7$Be solar neutrino interaction rate we corrected the limits previously placed on the coupling of the light $Z'$ to $L_μ$-$L_τ$ current in the parameter space relevant to the muon $(g-2)_μ$.
