Measurement of the total cross section and $\rho$-parameter from elastic scattering in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

The ATLAS collaboration
Eur.Phys.J.C 83 (2023) 441, 2023.

Abstract (data abstract)
CERN-LHC ATLAS. Measurement of the differential elastic cross section in the Mandelstam t-variable in proton-proton collisions at a centre-of-mass energy of 13 TeV collected in a special high beta* run in 2016. From a fit to the differential elastic cross section the total pp cross section, the rho-parameter and parameters B, C and D describing the nuclear slope are determined. In addition, the total integrated elastic cross section in the fiducial volume, the nuclear part of the total elastic cross section in the full phase space, the total inelastic cross section and the ratio of the elastic to total cross section are reported. The fiducial volume ist defined by 2.5E-4 GeV2 < t < 0.42 GeV2.

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