Glue spin Sg in the longitudinally polarized nucleon

Raza Sabbir Sufian; Michael J. Glatzmaier; Yi Bo Yang; Keh Fei Liu; Mingyang Sun

Glue spin S_g in the longitudinally polarized nucleon

Raza Sabbir Sufian, Michael J. Glatzmaier, Yi Bo Yang, Keh Fei Liu, Mingyang Sun

Physics And Astronomy

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

2 Scopus citations

Abstract

We present a lattice QCD calculation of the glue spin SG in the nucleon for the first time. It was recently shown that the first moment of the glue helicity distribution could be obtained through the cross-product of the the electric field E and the physical gauge field A_phys with the non-Abelian Coulomb gauge condition, i.e. ld ³ xE(x) x A_phys (x) in the infinite momentum frame. We use the gauge field tensor from the overlap Dirac operator to check the frame dependence and calculate glue spin with several momenta. The calculation is carried out with valence overlap fermion on 2+1 flavor DWF gauge configurations on the 24³ × 64 lattice with a^-1 = 1.77 GeV with the light sea quark mass corresponding to a pion mass of 330 MeV.

Original language	English
Article number	166
Journal	Proceedings of Science
Volume	Part F130500
State	Published - 2014
Event	32nd International Symposium on Lattice Field Theory, LATTICE 2014 - New York, United States Duration: Jun 23 2014 → Jun 28 2014

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© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

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title = "Glue spin Sg in the longitudinally polarized nucleon",

abstract = "We present a lattice QCD calculation of the glue spin SG in the nucleon for the first time. It was recently shown that the first moment of the glue helicity distribution could be obtained through the cross-product of the the electric field E and the physical gauge field Aphys with the non-Abelian Coulomb gauge condition, i.e. ld 3 xE(x) x Aphys (x) in the infinite momentum frame. We use the gauge field tensor from the overlap Dirac operator to check the frame dependence and calculate glue spin with several momenta. The calculation is carried out with valence overlap fermion on 2+1 flavor DWF gauge configurations on the 243 × 64 lattice with a-1 = 1.77 GeV with the light sea quark mass corresponding to a pion mass of 330 MeV.",

author = "Sufian, {Raza Sabbir} and Glatzmaier, {Michael J.} and Yang, {Yi Bo} and Liu, {Keh Fei} and Mingyang Sun",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.; 32nd International Symposium on Lattice Field Theory, LATTICE 2014 ; Conference date: 23-06-2014 Through 28-06-2014",

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volume = "Part F130500",

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TY - JOUR

T1 - Glue spin Sg in the longitudinally polarized nucleon

AU - Sufian, Raza Sabbir

AU - Glatzmaier, Michael J.

AU - Yang, Yi Bo

AU - Liu, Keh Fei

AU - Sun, Mingyang

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

PY - 2014

Y1 - 2014

N2 - We present a lattice QCD calculation of the glue spin SG in the nucleon for the first time. It was recently shown that the first moment of the glue helicity distribution could be obtained through the cross-product of the the electric field E and the physical gauge field Aphys with the non-Abelian Coulomb gauge condition, i.e. ld 3 xE(x) x Aphys (x) in the infinite momentum frame. We use the gauge field tensor from the overlap Dirac operator to check the frame dependence and calculate glue spin with several momenta. The calculation is carried out with valence overlap fermion on 2+1 flavor DWF gauge configurations on the 243 × 64 lattice with a-1 = 1.77 GeV with the light sea quark mass corresponding to a pion mass of 330 MeV.

AB - We present a lattice QCD calculation of the glue spin SG in the nucleon for the first time. It was recently shown that the first moment of the glue helicity distribution could be obtained through the cross-product of the the electric field E and the physical gauge field Aphys with the non-Abelian Coulomb gauge condition, i.e. ld 3 xE(x) x Aphys (x) in the infinite momentum frame. We use the gauge field tensor from the overlap Dirac operator to check the frame dependence and calculate glue spin with several momenta. The calculation is carried out with valence overlap fermion on 2+1 flavor DWF gauge configurations on the 243 × 64 lattice with a-1 = 1.77 GeV with the light sea quark mass corresponding to a pion mass of 330 MeV.

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M3 - Conference article

AN - SCOPUS:85030118621

VL - Part F130500

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 166

T2 - 32nd International Symposium on Lattice Field Theory, LATTICE 2014

Y2 - 23 June 2014 through 28 June 2014

ER -

Glue spin S_g in the longitudinally polarized nucleon

Abstract

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