A lattice determination of the second moment of the polarised valence quark distribution

Details A lattice determination of the second moment of the polarised valence quark distribution A lattice determination of the second moment of the polarised valence quark distribution

1997-08-07

arxiv.org/abs/hep-ph/9708270v1

Phys.Lett.B414:340-346,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, Latex2e, 2 figures, epsf and latexsym required

Scientific paper

10.1016/S0370-2693(97)01201-X

We perform a Monte Carlo calculation of the second moment of the polarised valence quark distributions in the nucleon, using quenched Wilson fermions. The special feature of this moment is that it is directly accessible experimentally. At a scale of $\mu \approx 2$GeV we find $\Delta^{(1)}u = 0.198(8)$, $\Delta^{(1)}d = -0.0477(33)$. We compare these numbers with recent experimental results of the SMC collaboration.

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