A LATTICE DETERMINATION OF THE 2ND MOMENT OF THE POLARIZED VALENCE QUARK DISTRIBUTION

Authors
GOCKELER M HORSLEY R MANKIEWICZ L PERLT H RAKOW P SCHIERHOLZ G SCHILLER A
Citation
M. Gockeler et al., A LATTICE DETERMINATION OF THE 2ND MOMENT OF THE POLARIZED VALENCE QUARK DISTRIBUTION, Physics letters. Section B, 414(3-4), 1997, pp. 340-346
Citations number
28
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
414
Issue
3-4
Year of publication
1997
Pages
340 - 346
Database
ISI
SICI code
0370-2693(1997)414:3-4<340:ALDOT2>2.0.ZU;2-W
Abstract
We perform a Monte Carlo calculation of the second moment of the polar ised valence quark distributions in the nucleon, using quenched Wilson fermions. The special feature of this moment is that it is directly a ccessible experimentally. At a scale of mu approximate to 2GeV we find Delta((1))u = 0.198(8), Delta((1))d = -0.0477(33). We compare these n umbers with recent experimental results of the SMC collaboration. (C) 1997 Elsevier Science B.V.