TWIST-4 MATRIX-ELEMENTS OF THE NUCLEON FROM RECENT DIS DATA AT CERN AND SLAC

被引:36
作者
CHOI, S
HATSUDA, T
KOIKE, Y
LEE, SH
机构
[1] MICHIGAN STATE UNIV,NATL SUPERCOND CYCLOTRON LAB,E LANSING,MI 48824
[2] UNIV WASHINGTON,DEPT PHYS,SEATTLE,WA 98195
基金
美国国家科学基金会;
关键词
D O I
10.1016/0370-2693(93)91092-2
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
By using the next-to-leading order analyses of the Precision lepton-hadron deep inelastic measurements at CERN and SLAC, we extract model independent constraints on the nucleon matrix elements of the twist-4 operators. We also study a parameterization of these matrix elements and point out the possibility that the matrix elements of the quark-gluon mixed operator has a negative value -(400 +/- 100) MeV2 at 5 GeV2 renormalization scale. The uncertainty of our result due to the next-next-to-leading order correction is also discussed.
引用
收藏
页码:351 / 357
页数:7
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