Figure 1: Dependence of the fraction of single-sided events (Rss) on the relative diffractive contribution (fD).
From: Measurement of the inelastic proton–proton cross-section at √s=7 TeV with the ATLAS detector
The ratio of the single-sided to inclusive event sample Rss as a function of the fractional contribution of diffractive events, fD, to the inelastic cross-section. The data value for Rss is shown as the horizontal line with its systematic uncertainties (grey band). Also shown are predictions of several models as a function of an assumed value of fD. For all three DL predictions, the α′ value is 0.25 GeV−2. The default fD values are indicated by the markers; they are 32.2% for all models except Phojet that uses 20.2%.
