Proton mass decomposition

Yi Bo Yang; Ying Chen; Terrence Draper; Jian Liang; Keh Fei Liu

doi:10.1051/epjconf/201817514002

Proton mass decomposition

Yi Bo Yang, Ying Chen, Terrence Draper, Jian Liang, Keh Fei Liu

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

We report the results on the proton mass decomposition and also on the related quark and glue momentum fractions. The results are based on overlap valence fermions on four ensembles of N_f = 2 + 1 DWF configurations with three lattice spacings and volumes, and several pion masses including the physical pion mass. With 1-loop pertur-bative calculation and proper normalization of the glue operator, we find that the u, d, and s quark masses contribute 9(2)% to the proton mass. The quark energy and glue field energy contribute 31(5)% and 37(5)% respectively in the MS scheme at μ = 2 GeV. The trace anomaly gives the remaining 23(1)% contribution. The u, d, s and glue momentum fractions in the MS scheme are consistent with the global analysis at μ = 2 GeV.

Original language	English
Article number	14002
Journal	EPJ Web of Conferences
Volume	175
DOIs	https://doi.org/10.1051/epjconf/201817514002
State	Published - Mar 26 2018
Event	35th International Symposium on Lattice Field Theory, Lattice 2017 - Granada, Spain Duration: Jun 18 2017 → Jun 24 2017

Bibliographical note

Publisher Copyright:
© The Authors, published by EDP Sciences, 2018.

ASJC Scopus subject areas

General Physics and Astronomy

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10.1051/epjconf/201817514002

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title = "Proton mass decomposition",

abstract = "We report the results on the proton mass decomposition and also on the related quark and glue momentum fractions. The results are based on overlap valence fermions on four ensembles of Nf = 2 + 1 DWF configurations with three lattice spacings and volumes, and several pion masses including the physical pion mass. With 1-loop pertur-bative calculation and proper normalization of the glue operator, we find that the u, d, and s quark masses contribute 9(2)% to the proton mass. The quark energy and glue field energy contribute 31(5)% and 37(5)% respectively in the MS scheme at μ = 2 GeV. The trace anomaly gives the remaining 23(1)% contribution. The u, d, s and glue momentum fractions in the MS scheme are consistent with the global analysis at μ = 2 GeV.",

author = "Yang, {Yi Bo} and Ying Chen and Terrence Draper and Jian Liang and Liu, {Keh Fei}",

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TY - JOUR

T1 - Proton mass decomposition

AU - Yang, Yi Bo

AU - Chen, Ying

AU - Draper, Terrence

AU - Liang, Jian

AU - Liu, Keh Fei

N1 - Publisher Copyright: © The Authors, published by EDP Sciences, 2018.

PY - 2018/3/26

Y1 - 2018/3/26

N2 - We report the results on the proton mass decomposition and also on the related quark and glue momentum fractions. The results are based on overlap valence fermions on four ensembles of Nf = 2 + 1 DWF configurations with three lattice spacings and volumes, and several pion masses including the physical pion mass. With 1-loop pertur-bative calculation and proper normalization of the glue operator, we find that the u, d, and s quark masses contribute 9(2)% to the proton mass. The quark energy and glue field energy contribute 31(5)% and 37(5)% respectively in the MS scheme at μ = 2 GeV. The trace anomaly gives the remaining 23(1)% contribution. The u, d, s and glue momentum fractions in the MS scheme are consistent with the global analysis at μ = 2 GeV.

AB - We report the results on the proton mass decomposition and also on the related quark and glue momentum fractions. The results are based on overlap valence fermions on four ensembles of Nf = 2 + 1 DWF configurations with three lattice spacings and volumes, and several pion masses including the physical pion mass. With 1-loop pertur-bative calculation and proper normalization of the glue operator, we find that the u, d, and s quark masses contribute 9(2)% to the proton mass. The quark energy and glue field energy contribute 31(5)% and 37(5)% respectively in the MS scheme at μ = 2 GeV. The trace anomaly gives the remaining 23(1)% contribution. The u, d, s and glue momentum fractions in the MS scheme are consistent with the global analysis at μ = 2 GeV.

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U2 - 10.1051/epjconf/201817514002

DO - 10.1051/epjconf/201817514002

M3 - Conference article

AN - SCOPUS:85045131114

SN - 2101-6275

VL - 175

JO - EPJ Web of Conferences

JF - EPJ Web of Conferences

M1 - 14002

T2 - 35th International Symposium on Lattice Field Theory, Lattice 2017

Y2 - 18 June 2017 through 24 June 2017

ER -

Proton mass decomposition

Abstract

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