Measurement of the total cross section and $$\rho $$ ρ -parameter from elastic scattering in pp collisions at $$\sqrt{s}=13$$ s = 13  TeV with the ATLAS detector

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dc.article.number441
dc.catalogadorcrc
dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbbott, D. C.
dc.contributor.authorAbeling, K.
dc.contributor.authorAbidi, S. H.
dc.contributor.authorAbusleme Hoffman, Ángel Christian
dc.contributor.authorDíaz, Marco A.
dc.contributor.authorGaray Walls, Francisca
dc.contributor.otherATLAS Collaboration
dc.date.accessioned2023-05-30T12:53:03Z
dc.date.available2023-05-30T12:53:03Z
dc.date.issued2023
dc.date.updated2023-05-28T00:04:05Z
dc.description.abstractIn a special run of the LHC with β =2.5km, proton–proton elastic-scattering events were recorded at √s=13 TeV with an integrated luminosity of 340 µb−1 using the ALFA subdetector of ATLAS in 2016. The elastic cross section was measured differentially in the Mandelstamt variable in the range from−t =2.5·10−4GeV2 to−t =0.46GeV2 using 6.9 million elastic-scattering candidates. This paper presents measurements of the total cross section σtot, parameters of the nuclear slope, and the ρ-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 thet-dependence. The results for σtot and ρare σtot(pp→X)=104.7±1.1mb, ρ=0.098±0.011. The uncertain tyinσtot is dominated by the luminosity measurement, and in ρ by imperfect knowledge of the detector alignment and by modelling of the nuclear amplitude.
dc.fechaingreso.objetodigital2023-05-28
dc.fuente.origenAutoarchivo
dc.identifier.citationThe European Physical Journal C. 2023 May 26;83(5):441
dc.identifier.doi10.1140/epjc/s10052-023-11436-8
dc.identifier.eissn1434-6052
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-023-11436-8
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/70496
dc.information.autorucEscuela de Ingeniería ; Abusleme Hoffman, Ángel Christian ; 0000-0003-0762-7204 ; 2698
dc.information.autorucInstituto de Física ; Díaz, Marco A. ;0000-0003-1258-8684; 104746
dc.information.autorucInstituto de Física ; Garay Walls, Francisca ;0000-0002-6670-1104;131813
dc.issue.numero5
dc.language.isoen
dc.nota.accesoContenido completo
dc.pagina.final49
dc.pagina.inicio1
dc.revistaThe European Physical Journal C
dc.rightsacceso abierto
dc.rights.holderThe Author(s)
dc.subject.ddc522
dc.subject.deweyAstronomíaes_ES
dc.titleMeasurement of the total cross section and $$\rho $$ ρ -parameter from elastic scattering in pp collisions at $$\sqrt{s}=13$$ s = 13  TeV with the ATLAS detector
dc.typeartículo
dc.volumen83
sipa.codpersvinculados2698
sipa.codpersvinculados104746
sipa.codpersvinculados131813
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