How much of the nucleon spin is carried by glue? - INSPIRE

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How much of the nucleon spin is carried by glue?

Ian Balitsky
(
- Old Dominion U. and
- Jefferson Lab and
- MIT, LNS
)
,
Xiang-Dong Ji
(
- Maryland U. and
- MIT, LNS
)

Feb, 1997

7 pages

Published in:

Phys.Rev.Lett. 79 (1997) 1225-1228

e-Print:

hep-ph/9702277 [hep-ph]

DOI:

10.1103/PhysRevLett.79.1225

Report number:

JLAB-THY-97-05,
UMD-PP-97-079,
MIT-CTP-2607,
U.OFMD-PP#97-079

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Abstract: (arXiv)

We estimate in the QCD sum rule approach the amount of the nucleon spin carried by the gluon angular momentum: the sum of the gluon spin and orbital angular momenta. The result indicates that gluons contribute at least one half of the nucleon spin at scale of 1 GeV^2.

Note:

replaced with a couple of reference added and spell-checked

nucleon: spin
quantum chromodynamics: sum rule
gluon: spin
gluon: angular momentum
tensor: energy-momentum
correlation function
operator product expansion
numerical calculations

References(20)

Figures(0)

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