EPJ Web of Conferences 141, 03007 (2017)
https://doi.org/10.1051/epjconf/201714103007

Measurements of the elastic, inelastic and total pp cross sections with the ATLAS, CMS and TOTEM detectors

Niels Bohr Institute, Blegdamsvej 17, 2100 Copenhagen OE, Denmark

^a e-mail: smortens@nbi.dk

Published online: 12 April 2017

Abstract

The elastic (σ_el), inelastic (σ_inel), and total (σ_tot) cross sections are related through the diσerential elastic cross section using the optical theorem. ATLAS and TOTEM have used forward detectors to measure the elastic scattering at √s = 8 TeV. The results for the total cross section are σ_{tot, 8 TeV}^TOTEM = 101.7 ± 2.9 mb and σ_{tot, 8 TeV}^ATLAS = 96.07 ± 0.92 mb and for the inelastic cross section σ_{inel, 8 TeV}^TOTEM = 74.7 ± 1.7 mb and σ_{inel, 8 TeV}^ATLAS ± 71.73 ± 0.71 mb. Alternatively, the inelastic cross section can be measured in a fiducial region and extrapolated to full phase-space using theoretical models. The results from ATLAS and CMS at √s = 13 TeV are σ_{inel, 13 TeV}^CMS = 71.3±3.5 mb and σ_{inel, 13 TeV}^ATLAS ± 79.3±2.9 mb.