A study of a relativistic quark-diquark model for the nucleon

被引：17
|
作者：
Gutierrez, C. [1 ]
De Sanctis, M. [2 ]
机构：
[1] Univ Estadual Paulista, Inst Fis Teor, BR-12228900 Sao Paulo, Brazil
[2] Univ Nacl Colombia, Dept Fis, Bogota, Dc, Colombia
来源：
EUROPEAN PHYSICAL JOURNAL A | 2014年 / 50卷 / 11期
关键词：
ELECTROMAGNETIC FORM-FACTORS; NO RADIAL EXCITATIONS; ZWEIG-IIZUKA RULE; ELASTIC-SCATTERING; CLASSIFICATION; BARYONS;
D O I：
10.1140/epja/i2014-14169-7
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 develop a specific quark-diquark constituent model for the study of the nucleon and its excited states. A relativistic kinetic energy operator is used for both the quark and the diquark. Interaction terms depending on the spin and angular momentum operators are introduced to describe in detail the mass spectrum. Different values of the parameters in the interaction operators are taken for the scalar and axial-vector diquark states. The tensor interaction is also considered in the present model. The baryon spectrum is calculated up to resonance masses of 2 GeV.
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页数：9
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