The QCD Quark Propagator in Coulomb Gauge and - Institut für Physik

Chapter 6. Nucleon Form Factors in a Covariant Diquark-Quark model 79
1
G E
p
0.8
0.6
0.4
fit F.W.
set A ; χ 1
=1
set A ; χ 1
=0
set A ; χ 1
=2
set B ; χ 1
=1
set B ; χ 1
=0
set B ; χ 1
=2
G M
p
4
3
2
0.2
1
0
0 1 2 3 4 5 6
Q 2 [GeV 2 ]
0
0 1 2 3 4 5 6
Q 2 [GeV 2 ]
0.06
0.0
-0.5
0.04
-1.0
G E
n
G M
n
0.02
-1.5
-2.0
0
0 1 2 3 4 5 6
Q 2 [GeV 2 ]
0 1 2 3 4 5 6
Q 2 [GeV 2 ]
Figure 6.3: Response of nucleon form factors to variations in the electric quadrupole moment
of the axial-vector diquark, cf. [AHK + 05]: χ 1 + = 0, 1, 2; with µ 1 + = 2, κ T = 2. The other
features are described in the caption of figure6.2.