Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector

A measurement of the total pp cross section at the LHC at s=7 TeV is presented. In a special run with high-β ⋆ beam optics, an integrated luminosity of 80 μb −1 was accumulated in order to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable t. Th...

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Publicado: 2014
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05503213_v889_n_p486_Aad
http://hdl.handle.net/20.500.12110/paper_05503213_v889_n_p486_Aad
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_05503213_v889_n_p486_Aad2023-06-08T15:41:23Z Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector A measurement of the total pp cross section at the LHC at s=7 TeV is presented. In a special run with high-β ⋆ beam optics, an integrated luminosity of 80 μb −1 was accumulated in order 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 0.01 GeV 2 to 0.1 GeV 2 to extrapolate to |t|→0, the total cross section, σ tot (pp→X), is measured via the optical theorem to be: σ tot (pp→X)=95.35±0.38(stat.)±1.25(exp.)±0.37(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 to |t|→0. In addition, the slope of the elastic cross section at small |t| is determined to be B=19.73±0.14(stat.)±0.26(syst.) GeV −2 . © 2014 The Authors 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05503213_v889_n_p486_Aad http://hdl.handle.net/20.500.12110/paper_05503213_v889_n_p486_Aad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description A measurement of the total pp cross section at the LHC at s=7 TeV is presented. In a special run with high-β ⋆ beam optics, an integrated luminosity of 80 μb −1 was accumulated in order 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 0.01 GeV 2 to 0.1 GeV 2 to extrapolate to |t|→0, the total cross section, σ tot (pp→X), is measured via the optical theorem to be: σ tot (pp→X)=95.35±0.38(stat.)±1.25(exp.)±0.37(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 to |t|→0. In addition, the slope of the elastic cross section at small |t| is determined to be B=19.73±0.14(stat.)±0.26(syst.) GeV −2 . © 2014 The Authors
title Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector
spellingShingle Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector
title_short Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector
title_full Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector
title_fullStr Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector
title_full_unstemmed Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector
title_sort measurement of the total cross section from elastic scattering in pp collisions at √s=7 tev with the atlas detector
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05503213_v889_n_p486_Aad
http://hdl.handle.net/20.500.12110/paper_05503213_v889_n_p486_Aad
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