OCTET-BARYON FORM-FACTORS IN THE DIQUARK MODEL

被引：50

作者：

JAKOB, R ^{[1
]}

KROLL, P ^{[1
]}

SCHURMANN, M ^{[1
]}

SCHWEIGER, W ^{[1
]}

机构：

[1] GRAZ UNIV,INST THEORET PHYS,A-8010 GRAZ,AUSTRIA

来源：

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI | 1993年 / 347卷 / 02期

关键词：

D O I：

10.1007/BF01284677

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We present an alternative parameterization of the quark-diquark model of baryons which particularly takes care of the most recent proton electric form-factor data from the E136 experiment at SLAC. In addition to electromagnetic form factors of the nucleon, for which good agreement with data is achieved, we discuss the weak axial vector form factor of the nucleon as well as electromagnetic form factors of Lambda and Sigma hyperons. Technical advance in calculating the pertinent analytic expressions within perturbative quantum chromodynamics is gained by formulating the wave function of the quark-diquark system in a covariant way. Finally, we also comment on the influence of Sudakov corrections within the scope of the diquark model.

引用

页码：109 / 116

页数：8

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