论文标题
重新审视质子质量分解
Revisiting the proton mass decomposition
论文作者
论文摘要
文献中已经提出了质子质量的不同分解（总规则）。所有这些都与量子染色体动力学中的能量量张量有关。我们通过特别注意有关能量量张量的重新规范化的最新发展，审查和重新审查这些分解。也讨论了总规则之间的连接。我们为强耦合中最多3个循环的质量分解的各个术语提供了数值结果，并考虑了它们的方案依赖性。我们还详细介绍了痕量异常和Sigma项所起的作用。
Different decompositions (sum rules) for the proton mass have been proposed in the literature. All of them are related to the energy-momentum tensor in quantum chromodynamics. We review and revisit these decompositions by paying special attention to recent developments with regard to the renormalization of the energy-momentum tensor. The connection between the sum rules is discussed as well. We present numerical results for the various terms of the mass decompositions up to 3 loops in the strong coupling, and consider their scheme dependence. We also elaborate on the role played by the trace anomaly and the sigma terms.
