10 - H1 - Desy

9.2 Prompt photon + jet production in photoproduction 133
[pb/GeV]
dσ / dE T
γ
20
15
10
H1
Prompt Photon plus Jet Cross Sections
25
a. H1
b.
H1 Data
FGH (NLO)
LZ (k fact)
T
[pb]
γ
dσ / dη
20
15
10
5
5
R
[pb/GeV]
jet
dσ / dE T
0
1.5
1
0.5
6 8 10 12 14
γ
[GeV]
10
8
6
4
2
H1
corr. error
E T
R
[pb]
jet
dσ / dη
0
1.5
1
0.5
-1 0 1 2
η
c. 20
d.
15
10
5
H1
γ
0
1.5
0
1.5
R
1
0.5
5 10 15
jet
[GeV]
E T
R
1
0.5
-1 0 1 2
η
jet
Figure 9.3: The differential exclusive prompt photon + jet cross sections in bins of E γ T
(a), η γ (b), E jet
T
(c) and ηjet (d). The inner error bars indicate the fully uncorrelated error,
while the full error bars contain in addition the correlated error added in quadrature. The
measurement is plotted together with the NLO collinear calculation prediction (FGH) and
the prediction based on the k T factorisation approach (LZ). The lower part of the plot
presents the ratio R of the FGH prediction to the measurement together with the data
points. The error bars associated with the points indicate the fully uncorrelated error,
while the yellow band shows the fully correlated error.