Transparencies pdf - Desy

fm 2
0.45
0.4
0.35
0.3
1 10 2
x = 10 -2
10 -3
10 -4
10 4
Q 2 / GeV 2
10 6
Change of with x due to
DGLAP evolution - leads to effective α´
which drops with Q but still remains
finite even at very high Q.
The change of the average transverse gluonic size squared, 〈ρ 2 〉, due to
DGLAP evolution, for x = 10 −2 , 10 −3 and 10 −4 .
20
M.Strikman
20