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

Aaboud, M; Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Abeloos, B; Aben, R; ... Zwalinski, L; + view all (2016) Measurement of the total cross section from elastic scattering in pp collisions at root s=8 TeV with the ATLAS detector. Physics Letters B , 761 pp. 158-178. 10.1016/j.physletb.2016.08.020. Green open access

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Abstract

A measurement of the total pp cross section at the LHC at View the MathML sources=8 TeV is presented. An integrated luminosity of 500 μb−1500 μb−1 was accumulated in a special run with high-β⋆β⋆ 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 GeV20.014 GeV2 to 0.1 GeV20.1 GeV2 to extrapolate t→0t→0, the total cross section, σtot(pp→X)σtot(pp→X), is measured via the optical theorem to be View the MathML sourceσtot(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→0t→0. In addition, the slope of the exponential function describing the elastic cross section at small t is determined to be View the MathML sourceB=19.74±0.05(stat.)±0.23(syst.)GeV−2.

Type: Article
Title: Measurement of the total cross section from elastic scattering in pp collisions at root s=8 TeV with the ATLAS detector
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.physletb.2016.08.020
Publisher version: http://dx.doi.org/10.1016/j.physletb.2016.08.020
Language: English
Additional information: Copyright © 2016 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Keywords: Science & Technology, Physical Sciences, Astronomy & Astrophysics, Physics, Nuclear, Physics, Particles & Fields, Physics, HIGH-ENERGY, LHC ENERGY, INTERFERENCE, MODEL
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1507511
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