|Fig. 1||Distributions versus xi and t: (a) Roman pot acceptance; (b) inclusive diffractive event sample; (c) ratio of dijet to inclusive diffractive events versus xi and (d) versus t.|
|Fig. 2||Comparison of diffractive to non-diffractive dijet (a) mean ET and (b) mean eta distributions.|
Ratio of diffractive to non-diffractive dijet event rates
as a function of
x (momentum fraction of parton in pbar).
The solid lines are fits to the form
(The data points of this figure are here. The data points of the R(x) distribution for 0.035< xi <0.095 are here.)
Data beta distribution (points) compared with expectations from
the parton densities of the proton extracted from diffractive deep
inelastic scattering by the H1 Collaboration. The straight line is a fit
to the data of the form beta-n.
The lower (upper) boundary of the filled band
represents the data distribution obtained by using only the two leading
jets (up to four jets of ET>5 GeV) in evaluating beta.
The dashed (dotted) lines are expectations from the H1 fit 2 (fit 3).
All the distributions in this figure
are normalized per unit xi.
The systematic uncertainty in the normalization of the data is
(The data points of this figure are here.)