ATLAS measurements of soft particle production and diffraction

摘要

The ATLAS Collaboration has measured a wide range of properties of soft particle production in s~(1/2)=900 GeV and s~(1/2)=7 TeV proton-proton collisions at the Large Hadron Collider (LHC). These include forward-backward and azimuthal correlations, azimuthal ordering of hadron production, underlying event properties and their dependence on aspects of the hard scattering process. The inelastic and diffractive cross sections have also been measured, using particle forward flow and rapidity gaps. Many of these measurements are used to develop and tune models for soft particle production.