I discuss the scope and naturalness of the proton mass decomposition (or sum rule) published in Phys. Rev. Lett. 74, 1071 (1995) and answer a few criticisms that appeared recently in the literature, focusing particularly on its interpretation and the quantum anomalous energy contribution. I comment on the so-called frame-independent or invariant-mass decomposition from the trace of the energy-momentum tensor. I stress the importance of measuring the quantum anomalous energy through experiments. Finally, I point out a large discrepancy in the scalar radius of the nucleon extracted from vector-meson productions and lattice QCD calculations.

中文翻译：

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质子质量分解：自然性和解释

我讨论了《物理学报》上发表的质子质量分解（或求和规则）的范围和自然性。莱特牧师 74，1071（1995），并回答了最近在文献中出现的一些批评，特别是对它的解释和量子异常能量的贡献。我从能量动量张量的轨迹来评论所谓的帧无关或不变质量分解。我强调通过实验测量量子异常能量的重要性。最后，我指出从矢量介子产生和晶格QCD计算中提取的核子的标量半径存在很大差异。