论文标题
分析量子异常对质子质量的贡献
Analysis of the contribution of the quantum anomaly energy to the proton mass
论文作者
论文摘要
受到$ J/ψ$光生生产的近期HALL C和GLUEX测量的启发，对量子异常（QAE）对质子质量的贡献进行了系统分析。结果表明，有效的Pomeron模型和参数化的两个Gluon交换模型可以很好地解释$ J/ψ$光增生的横截面。基于两个模型给出的预测横截面值，首次提取QAE贡献的分布。最后，QAE贡献的平均值估计为（3.50 $ \ pm $ 0.70）$ \％$，这表明QAE对质子质量的贡献很小。因此，我们将此结果与其他小组的结果进行了比较，并探讨了差异的原因。
Inspired by the recent Hall C and GlueX measurements of $J/ψ$ photoproduction, a systematic analysis of the contribution of quantum anomalous energy (QAE) to the proton mass is carried out under the framework of the vector meson dominance model. The results show that the effective Pomeron model and the parametrized two gluon exchange model can explain the cross section of $J/ψ$ photoproduction well. Based on the predicted cross section values given by the two models, the distribution of the QAE contribution with the energy is extracted for the first time. Finally, the average value of the QAE contribution is estimated to be (3.50$\pm$0.70)$\%$, which suggests that the QAE contribution to the proton mass is small. Accordingly, we compared this result with those of other groups and explored the causes for the differences.
