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The spin asymmetry in deep inelastic scattering of longitudinally polarised muons by longitudinally polarised protons has been measured in the range 0.01<×<0.7. The spin dependent structure function g1(x) for the proton has been determined and, combining the data with earlier SLAC measurements, its integral over x found to be 0.126±0.010(stat.)±0.015(syst.), in disagreement with the Ellis-Jaffe sum rule. Assuming the validity of the Biorken sum rule, this result implies a significant negative value for the integral of g1 for the neutron. These integrals lead to the conclusion, in the naïve quark parton model, that the total quark spin constitutes a rather small fraction of the spin of the nucleon. Results are also presented on the asymmetries in inclusive hadron production which are consistent with the above picture.
Design of enzyme reactors as chromatographic columns for racemic resolution of amino acid esters
(1989)
A Cooperative Work Environment for Evolutionary Software Development / Kurbel, K., Pietsch, W.
(1990)
Optimal Adjustment Policies
(1990)
Quaternary events at the Horn of Africa / Voigt, B., B. Gabriel, B. Lassonczyk and Mumin M. Ghod
(1990)
Simulation and measurement of melting effects on metal sheets caused by direct lightning strikes
(1991)
The role of Germany, Japan and the United States on the ECU-bond markets / Hans Wilhelm Mackenstein
(1991)
Advanced window systems and building energy performance / S. Reilly ; J. Göttsche ; V. Wittwer
(1991)
Differential multiplicities of forward produced hadrons in deep inelastic muon scattering on nuclear targets have been compared with those from deuterium. The ratios are observed to increase towards unity as the virtual photon energy increases with no significant dependence on the other muon kinematic variables. The hadron transverse momentum distribution is observed to be broadened in nuclear targets. The dependence on the remaining hadron variables is investigated and the results are discussed in the framework of intranuclear interaction models and in the context of the EMC effect.
Fast, Automated Testing of Different Air Filter Media / Mölter, W. ; Helsper, C. ; Kaminski, S.
(1992)