Research Article

Large Rapidity Gap Method to Select Soft Diffraction Dissociation at the LHC

Table 7

The fraction of SDD events which have at least one neutral particle in ZDC′′ (the ZDC detector on the side with the gap) is given for different cuts on the size of the and with different thresholds for the transverse momentum of the neutral particles. The gap is defined as an edge gap and the final state particles within < with > 200 MeV are used to find the size of the gap.

> 2.5 > 3.0 > 3.5 > 4.0

No cut 0.23% 0.10% 0.06% 0.03%
> 100 MeV 0.20% 0.09% 0.05% 0.03%
> 200 MeV 0.16% 0.08% 0.05% 0.02%