BARYON FORM-FACTORS IN A DIQUARK QUARK BOUND-STATE DESCRIPTION

被引：19

作者：

HELLSTERN, G ^{[1
]}

WEISS, C ^{[1
]}

机构：

[1] RUHR UNIV BOCHUM, INST THEORET PHYS 2, D-44780 BOCHUM, GERMANY

来源：

PHYSICS LETTERS B | 1995年 / 351卷 / 1-3期

关键词：

D O I：

10.1016/0370-2693(95)00404-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Nucleon form factors are calculated in a relativistic diquark-quark picture based on the Nambu-Jona-Lasinio model. The nucleon wave function is obtained in a static approximation to the quark exchange interaction between the valence quark and the diquark. We evaluate the valence quark and 0(+)-diquark contribution to the nucleon electromagnetic and weak currents. We find reasonable electric charge radii, magnetic moments as in the additive diquark model, and g(A) approximate to 1. We discuss the dependence on the model parameters.

引用

页码：64 / 69

页数：6

共 18 条

[1] DIQUARKS [J].

ANSELMINO, M ;

PREDAZZI, E ;

EKELIN, S ;

FREDRIKSSON, S ;

LICHTENBERG, DB .

REVIEWS OF MODERN PHYSICS, 1993, 65 (04) :1199-1233

[2] BARYON STRUCTURE AND QCD - NUCLEON CALCULATIONS [J].

BURDEN, CJ ;

CAHILL, RT ;

PRASCHIFKA, J .

AUSTRALIAN JOURNAL OF PHYSICS, 1989, 42 (02) :147-159

[3] BARYON STRUCTURE AND QCD [J].

CAHILL, RT ;

ROBERTS, CD ;

PRASCHIFKA, J .

AUSTRALIAN JOURNAL OF PHYSICS, 1989, 42 (02) :129-145

[4] DIQUARKS AND THE BOSONIZATION OF QCD [J].

CAHILL, RT ;

PRASCHIFKA, J ;

BURDEN, CJ .

AUSTRALIAN JOURNAL OF PHYSICS, 1989, 42 (02) :161-169

[5] DIQUARK CLUSTERING AND THE NEUTRON CHARGE RADIUS [J].

DZIEMBOWSKI, Z ;

METZGER, WJ ;

VANDEWALLE, RT .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1981, 10 (03) :231-238

[6] HADRONIZATION OF QUARK FLAVOR DYNAMICS INCLUDING 3-QUARK FORCES [J].

EBERT, D ;

KASCHLUHN, L .

PHYSICS LETTERS B, 1992, 297 (3-4) :367-376

[7]

EBERT D, 1986, NUCL PHYS B, V271, P188

[8]

ERICSON T, 1988, PIONS NUCLEI

[9] SOLUTION OF THE RELATIVISTIC 3 QUARK FADDEEV EQUATION IN THE NAMBU-JONA-LASINIO (NJL) MODEL [J].

ISHII, N ;

BENTZ, W ;

YAZAKI, K .

PHYSICS LETTERS B, 1993, 318 (01) :26-31

[10] FADDEEV APPROACH TO THE NUCLEON IN THE NAMBU-JONA-LASINIO (NJL) MODEL [J].

ISHII, N ;

BENTZ, W ;

YAZAKI, K .

PHYSICS LETTERS B, 1993, 301 (2-3) :165-169

← 1 2 →