论文标题
MUON G-2和晶格QCD Hadronic真空极化可能指向新的，长期寿命的中性Hadron
The muon g-2 and lattice QCD hadronic vacuum polarization may point to new, long-lived neutral hadrons
论文作者
论文摘要
MUON的G-2的实验值$4.2σ$比基于基于HADRONIC真空极化贡献（HVP）的标准模型预测（HVP）大于$ 4.2σ$（HVP），从测得的R-RATIO，$σ（e^+e^ - \！\！\！\！\！\ rightArrow \！ μ^ - ）$;在晶格QCD中计算的HVP也显着超过了测得的R-Ratio值。我们在这里表明这些差异可以通过对$ e^+e^ - \的未发现的贡献来解释。 \ rightarrow \！ \ Mathit {Hadrons} $是由以前尚未鉴定出的中性，长寿的Hadron所产生的。我们建议两名新的Hadron的候选人，并提出了几项实验测试。
The experimental value of g-2 of the muon is larger by $4.2 σ$ than the Standard Model prediction based on the hadronic vacuum polarization contribution (HVP) determined from the measured R-ratio, $σ(e^+e^- \! \rightarrow \! \mathit{hadrons})/σ(e^+e^- \! \rightarrow \!μ^+ μ^-)$; the HVP calculated in lattice QCD also significantly exceeds the measured R-ratio value. We show here that these discrepancies can be explained by an undetected contribution to $e^+e^- \! \rightarrow \! \mathit{hadrons}$ as could arise from production of neutral, long-lived hadrons which have not previously been identified. We suggest two candidates for the new hadrons and propose several experimental tests.
