Revisiting the proton mass decomposition
Revisiting the proton mass decomposition
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重新审视质子质量分解
DOI：
10.1103/physrevd.102.114042
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发表时间：
2020
影响因子：
5
通讯作者：
Rodini, S.
中科院分区：
文献类型：
--
作者：
Metz, A.;Pasquini, B.;Rodini, S.
在文献中已经提出了质子质量的不同分解（求和规则）。它们都与量子色动力学中的能量动量张量有关。我们审查和重温这些分解，特别注意最近的事态发展与能量动量张量的重整化。还讨论了求和规则之间的联系。我们提出了数值计算结果的各种条款的质量分解到三个循环中的强耦合，并考虑其方案的依赖性。我们还阐述了所起的作用的痕迹异常和西格玛条款。
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 three 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.
DOI：
--
发表时间：
2006
期刊：
--
影响因子：
--
作者：
Iroon Polytechniou-
通讯作者：
Iroon Polytechniou-