Transparencies pdf - Desy

Using information on the exclusive hard processes we can also estimate t-dependence
of the elastic dipole-nucleon scattering and hence estimate
Γq ¯q f rom σ(q ¯qN).
In the case gg-N scattering we assume pQCD relation
Γ Γ Γ
Γ Γqq
Γgg
1
0.5
0
qq
0 0.5
x = 10 −2
x = 10 −3
x = 10 −4
x = 10 −5
d = .1 (fm)
gg
0.5
1
qq
1 0.5
1
b (fm) 0
b (fm) 0
1
0 0.5 1
0 0.5
d = .3 (fm)
29
gg
0.5
1
0.5
Γgg = 9
d = .5 (fm)
4 Γq ¯q
1
1
0.5
b (fm)
29