Spin contents of nucleons with SU(3) breaking - INSPIRE

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Spin contents of nucleons with SU(3) breaking

Jechiel Lichtenstadt
(
- Tel Aviv U.
)
,
Harry J. Lipkin
(
- Tel Aviv U. and
- Weizmann Inst.
)

Mar, 1995

9 pages

Published in:

Phys.Lett.B 353 (1995) 119-122

e-Print:

hep-ph/9504277 [hep-ph]

DOI:

10.1016/0370-2693(95)00531-O

Report number:

TAUP-2244-95,
WIS-95-15-PH

View in:

ADS Abstract Service

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Abstract:

We apply a model for SU(3) breaking to the analysis of the spin contents of the nucleon from the the latest data on first moments of the spin dependent structure functions and include higher order QCD corrections. The results show that the value of the total quark spin contribution to the nucleon spin

\Delta \Sigma \equiv \Delta u + \Delta d +\Delta s

remains about 0.3 and is very insensitive to SU(3) breaking, while the result for the strange quark contribution varies considerably with SU(3) breaking.

Note:

Six pages of LaTeX plus three figures (tarred, compressed, and uuencoded)

spin: nucleon
nucleon: spin
symmetry breaking: SU(3)
structure function: spin
spin: structure function
moment
quantum chromodynamics
correction: higher-order
quark: strangeness
numerical calculations: interpretation of experiments

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