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

Allbrooke, Benedict, Asquith, Lily, Cerri, Alessandro, Chavez Barajas, Carlos, De Santo, Antonella, Potter, Tina, Salvatore, Fabrizio, Santoyo Castillo, Itzebelt, Suruliz, Kerim, Sutton, Mark, Vivarelli, Iacopo and The Atlas Collaboration, et al. (2016) Measurement of the total cross section from elastic scattering in pp collisions at View the MathML sources=8 TeV with the ATLAS detector. Physics Letters B, 761. pp. 158-178. ISSN 0370-2693

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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.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Experimental Particle Physics Research Group
Subjects: Q Science > QC Physics
Depositing User: Richard Chambers
Date Deposited: 25 Oct 2016 10:13
Last Modified: 06 Mar 2017 13:10
URI: http://sro.sussex.ac.uk/id/eprint/64970

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