Observation of diffraction with the CMS experiment at the Large Hadron Collider
Abstract
A clear evidence of inclusive diffraction observed by the CMS detector at the Large Hadron Collider in minimum bias events at s=0.9 TeV, 2.36 TeV is presented. The observed diffractive signal is dominated by inclusive single-diffractive dissociation and can be identified by the presence of a Large Rapidity Gap that extends over the forward region of the CMS detector. A comparison of the data with Monte Carlo predictions provided by PYTHIA6 and PHOJET generators is given. In addition, first observation of the single-diffractive production of di-jets at s=7 TeV is presented.
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