Strangeness Contribution to the Polarized Nucleon Structure Function $g_1(x)$

Details Strangeness Contribution to the Polarized Nucleon Structure Function $g_1(x)$ Strangeness Contribution to the Polarized Nucleon Structure Function $g_1(x)$

1998-05-07

arxiv.org/abs/hep-ph/9805251v1

Phys.Lett. B439 (1998) 398-406

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 5 ps-files included via epsfig

Scientific paper

10.1016/S0370-2693(98)01038-7

The three flavor version of the Nambu-Jona-Lasinio chiral soliton model for baryons is employed to calculate the twist-2 contribution to the polarized nucleon structure function $g_1(x)$. In particular the role of the strange quark degree of freedom as a collective excitation of the chiral soliton is investigated in the context of flavor symmetry breaking. The model prediction for $g_1(x)$ refers to a low momentum scale $Q_0^2$. The leading order corrections to the scale dependence is computed along the QCD evolution program allowing to compare with data from SLAC.

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