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Longitudinal decorrelation measurements from pp to A+A with the ATLAS detectoror
his talk presents new measurements of longitudinal flow decorrelations in 5.02 TeV and 13 TeV pp collisions and 5.44 TeV Xe+Xe collisions with the ATLAS detector. The measurements are performed using the two-particle correlation method with charged-particle tracks within |eta| < 2.5 and clust...
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Lenguaje: | eng |
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2022
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Acceso en línea: | http://cds.cern.ch/record/2813842 |
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author | Nagle, James Lawrence |
author_facet | Nagle, James Lawrence |
author_sort | Nagle, James Lawrence |
collection | CERN |
description | his talk presents new measurements of longitudinal flow decorrelations in 5.02 TeV and 13 TeV pp collisions and 5.44 TeV Xe+Xe collisions with the ATLAS detector. The measurements are performed using the two-particle correlation method with charged-particle tracks within |eta| < 2.5 and clusters within 4.0 < |eta| < 4.9. Due to the larger influence of non-flow effects in small collision systems, template-based subtraction procedures are developed and applied to the measurement. These effects are observed to play a role even in large systems such as 5.44 TeV Xe+Xe collisions. Flow decorrelations are characterized in terms of the ratio of the correlations with a large pseudorapidity gap to those with small pseudorapidity gap, r_n, where n is the flow harmonic moment. Results are reported for the slope of r_2 as a function of pseudorapidity gap as a function of charged-particle multiplicity for the pp and Xe+Xe collision systems. This gives some of the first detailed information on the correlation between longitudinal and transverse energy deposition in pp collisions. |
id | cern-2813842 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2022 |
record_format | invenio |
spelling | cern-28138422022-06-28T21:52:58Zhttp://cds.cern.ch/record/2813842engNagle, James LawrenceLongitudinal decorrelation measurements from pp to A+A with the ATLAS detectororParticle Physics - Experimenthis talk presents new measurements of longitudinal flow decorrelations in 5.02 TeV and 13 TeV pp collisions and 5.44 TeV Xe+Xe collisions with the ATLAS detector. The measurements are performed using the two-particle correlation method with charged-particle tracks within |eta| < 2.5 and clusters within 4.0 < |eta| < 4.9. Due to the larger influence of non-flow effects in small collision systems, template-based subtraction procedures are developed and applied to the measurement. These effects are observed to play a role even in large systems such as 5.44 TeV Xe+Xe collisions. Flow decorrelations are characterized in terms of the ratio of the correlations with a large pseudorapidity gap to those with small pseudorapidity gap, r_n, where n is the flow harmonic moment. Results are reported for the slope of r_2 as a function of pseudorapidity gap as a function of charged-particle multiplicity for the pp and Xe+Xe collision systems. This gives some of the first detailed information on the correlation between longitudinal and transverse energy deposition in pp collisions.ATL-PHYS-SLIDE-2022-245oai:cds.cern.ch:28138422022-06-28 |
spellingShingle | Particle Physics - Experiment Nagle, James Lawrence Longitudinal decorrelation measurements from pp to A+A with the ATLAS detectoror |
title | Longitudinal decorrelation measurements from pp to A+A with the ATLAS detectoror |
title_full | Longitudinal decorrelation measurements from pp to A+A with the ATLAS detectoror |
title_fullStr | Longitudinal decorrelation measurements from pp to A+A with the ATLAS detectoror |
title_full_unstemmed | Longitudinal decorrelation measurements from pp to A+A with the ATLAS detectoror |
title_short | Longitudinal decorrelation measurements from pp to A+A with the ATLAS detectoror |
title_sort | longitudinal decorrelation measurements from pp to a+a with the atlas detectoror |
topic | Particle Physics - Experiment |
url | http://cds.cern.ch/record/2813842 |
work_keys_str_mv | AT naglejameslawrence longitudinaldecorrelationmeasurementsfrompptoaawiththeatlasdetectoror |