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Yang, YB; Liang, J; Bi, YJ; Chen, Y2,3; Draper, T; Liu, KF; Liu, ZF
Proton Mass Decomposition from the QCD Energy Momentum Tensor
发表期刊PHYSICAL REVIEW LETTERS
语种英语
关键词LATTICE NUCLEON
摘要We report results on the proton mass decomposition and also on related quark and glue momentum fractions. The results are based on overlap valence fermions on four ensembles of N-f = 2 + 1 domain wall fermion configurations with three lattice spacings and three volumes, and several pion masses including the physical pion mass. With fully nonperturbative renormalization (and universal normalization on both quark and gluon), we find that the quark energy and glue field energy contribute 32(4)(4)% and 36(5)(4)% respectively in the (MS) over bar (modified minimal substraction) scheme at is mu = 2 GeV. A quarter of the trace anomaly gives a 23(1)(1)% contribution to the proton mass based on the sum rule, given 9(2)(1)% contribution from the u, d, and s quark scalar condensates. The u, d, s, and glue momentum fractions in the (MS) over bar scheme are in good agreement with global analyses at it mu = 2 GeV.
2018
ISSN0031-9007
卷号121期号:21页码:212001
学科领域Physics
学科门类Physics, Multidisciplinary
DOI10.1103/PhysRevLett.121.212001
收录类别SCIE
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22785
专题理论物理所科研产出_SCI论文
作者单位1.Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
2.Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA
3.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
4.Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714
Yang, YB,Liang, J,Bi, YJ,et al. Proton Mass Decomposition from the QCD Energy Momentum Tensor[J]. PHYSICAL REVIEW LETTERS,2018,121(21):212001.
APA Yang, YB.,Liang, J.,Bi, YJ.,Chen, Y.,Draper, T.,...&Liu, ZF.(2018).Proton Mass Decomposition from the QCD Energy Momentum Tensor.PHYSICAL REVIEW LETTERS,121(21),212001.
MLA Yang, YB,et al."Proton Mass Decomposition from the QCD Energy Momentum Tensor".PHYSICAL REVIEW LETTERS 121.21(2018):212001.
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