Measurement of the total cross section and ?-parameter from elastic scattering in pp collisions at ?s=13 TeV with the ATLAS detector

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dc.contributor.authorAad G.
dc.contributor.authorAbbott B.
dc.contributor.authorAbbott D. C.
dc.contributor.authorAbeling K.
dc.contributor.authorAbidi S. H.
dc.contributor.authorAboulhorma A.
dc.contributor.authorAbramowicz H.
dc.contributor.authorAbreu H.
dc.contributor.authorAbulaiti Y.
dc.contributor.authorAbusleme Hoffman A. C.
dc.contributor.authorAcharya B. S.
dc.contributor.authorAchkar B.
dc.contributor.authorAdam L.
dc.contributor.authorAdam Bourdarios C.
dc.contributor.authorAdamczyk L.
dc.contributor.authorAdamek L.
dc.contributor.authorAddepalli S. V.
dc.contributor.authorAdelman J.
dc.contributor.authorAdiguzel A.
dc.contributor.authorAdorni S.
dc.contributor.authorAdye T.
dc.contributor.authorAffolder A. A.
dc.contributor.authorAfik Y.
dc.contributor.authorAgaras M. N.
dc.contributor.authorAgarwala J.
dc.contributor.authorAggarwal A.
dc.contributor.authorAgheorghiesei C.
dc.contributor.authorAguilar-Saavedra J. A.
dc.contributor.authorAhmad A.
dc.contributor.authorAhmadov F.
dc.contributor.authorAhmed W. S.
dc.contributor.authorAi X.
dc.contributor.authorAielli G.
dc.contributor.authorAizenberg I.
dc.contributor.authorAkbiyik M.
dc.contributor.authorAkesson T. P. A.
dc.contributor.authorAkimov A. V.
dc.contributor.authorAl Khoury K.
dc.contributor.authorAlberghi G. L.
dc.contributor.authorAlbert J.
dc.date.accessioned2025-05-19T16:37:52Z
dc.date.available2025-05-19T16:37:52Z
dc.date.issued2023/05/26
dc.description.abstractIn a special run of the LHC with beta star=2.5 km, proton-proton elastic-scattering events were recorded at root s=13 TeV with an integrated luminosity of 340 mu b(-1) using the ALFA subdetector of ATLAS in 2016. The elastic cross section was measured differentially in the Mandelstam t variable in the range from -t=2.5 center dot 10(-4) GeV2 to -t=0.46 GeV2 using 6.9 million elastic-scattering candidates. This paper presents measurements of the total cross section sigma(tot), parameters of the nuclear slope, and the rho-parameter defined as the ratio of the real part to the imaginary part of the elastic-scattering amplitude in the limit t -> 0. These parameters are determined from a fit to the differential elastic cross section using the optical theorem and different parameterizations of the t-dependence. The results for sigma(tot) and rho are sigma(tot) (PP -> X ) =104.7 +/- 1.1 mob , rho=0.098 +/- 0.011. The uncertainty in sigma(tot) is dominated by the luminosity measurement, and in rho by imperfect knowledge of the detector alignment and by modelling of the nuclear amplitude.
dc.identifier.doihttp://dx.doi.org/10.1140/epjc/s10052-023-11436-8
dc.identifier.issn1434-6044
dc.identifier.urihttps://publicacionesabiertas.userena.cl/handle/123456789/273
dc.languageEnglish
dc.publisherSPRINGER
dc.subjectINTERFERENCE, POLARIZATION, ODDERON, MODEL
dc.titleMeasurement of the total cross section and ?-parameter from elastic scattering in pp collisions at ?s=13 TeV with the ATLAS detector
dc.typeArticle

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