The TOTEM experiment at the LHC and its physics results

Abstract

The TOTEM experiment at the LHC has measured proton-proton elastic scattering in dedicated runs at s=7and8TeV. The proton-proton total, elastic and inelastic cross-sections were derived with different methods by either using the optical theorem or a luminosity independent method, where the directly measured inelastic and elastic rates are applied. The TOTEM experiment presented its first preliminary cross-sections for soft single and double diffraction at s=7 TeV. The central diffraction analysis is ongoing, including a common TOTEM-CMS analysis. The charged particle pseudorapidity density distribution, dNch/dη, was determined at 7 and 8 TeV.