Speaker
Description
Abstract: The status of diffractive measurements at the ATLAS experiment will be presented. Diffractive dijet production was identified using empty regions of the ATLAS detector (so-called rapidity gaps). The data are compared with Monte Carlo models and the rapidity gap survival probability has been estimated in the kinematic region with high diffractive contribution. If available, we will present a study of inclusive single diffractive distributions, performed using a sample of pp collision data collected under low-luminosity conditions at √s = 8 TeV. Events with a single forward proton measured in ALFA and dissociated system detected in the central detector are selected. Cross sections are measured differentially in the proton fractional momentum loss, the square of its momentum transfer and rapidity gap size. They are corrected back to particle level for interpretation and comparison with theoretical predictions.
