Precision Measurement of the Proton and Deuteron Spin Structure Functions g(sub 2)*.

Rock, S.

Technical Information Center Oak Ridge Tennessee

关键词: Spin structure functions;    Photon asymmetries;    Scattering;    Kinematic ranges;    Deutrons;   

RP-ID  :  DE2003812643

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We have measured the spin structure functions g (sup p) (sub 2) and g (sup d) (sub 2) by scattering 29.1 and 32.3 GeV longitudinally polarized electrons from transversely polarized NH (sub 3) and (sup 6)LiD targets. g (sub 2) approximately follows the twist-2 Wandzura-Wilczek calculation. The twist-3 reduced matrix elements d (sup p) (sub 2) and d (sup n) (sub 2) are less than two standard deviations from zero. The data are inconsistent with the Burkhardt-Cottingham sum rule if there is no pathological behavior as x yields 0. The Efremov-Leader-Teryaev integral is consistent with zero.