Logo image
Measurement of the total cross section from elastic scattering in pp collisions at s=8 TeV with the ATLAS detector
Journal article   Peer reviewed

Measurement of the total cross section from elastic scattering in pp collisions at s=8 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, O. Abdinov, B. Abeloos, R. Aben, O. S. AbouZeid, N. L. Abraham, H. Abramowicz, …
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol.761, pp.158-178
10/10/2016

Abstract

A measurement of the total pp cross section at the LHC at s=8 TeV is presented. An integrated luminosity of 500 ?b?1 was accumulated in a special run with high-?? beam optics to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable t. The measurement is performed with the ALFA sub-detector of ATLAS. Using a fit to the differential elastic cross section in the ?t range from 0.014 GeV2 to 0.1 GeV2 to extrapolate t?0, the total cross section, ?tot(pp?X), is measured via the optical theorem to be?tot(pp?X)=96.07±0.18(stat.)±0.85(exp.)±0.31(extr.)mb, where the first error is statistical, the second accounts for all experimental systematic uncertainties and the last is related to uncertainties in the extrapolation t?0. In addition, the slope of the exponential function describing the elastic cross section at small t is determined to be B=19.74±0.05(stat.)±0.23(syst.)GeV?2.
url
https://doi.org/10.1016/j.physletb.2016.08.020View
Published (Version of record) Open

Related links

Metrics

1 Record Views

Details

Logo image