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Forward-backward multiplicity correlations in pp, pPb and Pb+Pb collisions with the ATLAS detector
Two-particle pseudorapidity correlations are measured in 2.76 TeV Pb+Pb, 5.02 TeV pPb and 13 TeV pp collisions. Correlation function is measured using charged particles in the pseudorapidity range $|\eta|<2.4$ with transverse momentum $p_T>0.2$ GeV, and it is measured as a function of event mu...
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Lenguaje: | eng |
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2016
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Acceso en línea: | https://dx.doi.org/10.1016/j.nuclphysa.2016.02.044 http://cds.cern.ch/record/2119745 |
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author | Jia, Jiangyong |
author_facet | Jia, Jiangyong |
author_sort | Jia, Jiangyong |
collection | CERN |
description | Two-particle pseudorapidity correlations are measured in 2.76 TeV Pb+Pb, 5.02 TeV pPb and 13 TeV pp collisions. Correlation function is measured using charged particles in the pseudorapidity range $|\eta|<2.4$ with transverse momentum $p_T>0.2$ GeV, and it is measured as a function of event multiplicity, defined by number of charged particles with $|\eta|<2.5$ and $p_T>0.4$ GeV. The correlation function is decomposed into a short-range component (SRC) and a long-range component (LRC). The SRC differs significantly between the opposite-charge pairs and same-charge pairs, and between the three collision systems at similar multiplicity. The LRC is described approximately by $1+\langle a_1^2\rangle\eta_1\eta_2$ in all collision systems over the full multiplicity range. The values of $\langle a_1^2\rangle$ are consistent between the opposite-charge and same-charge pairs, and are similar for the three collision systems at similar multiplicity. The values of $\langle a_1^2\rangle$ and the magnitude of the SRC both follow a power-law dependence on the event multiplicity. |
id | cern-2119745 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2016 |
record_format | invenio |
spelling | cern-21197452023-03-14T18:33:43Zdoi:10.1016/j.nuclphysa.2016.02.044http://cds.cern.ch/record/2119745engJia, JiangyongForward-backward multiplicity correlations in pp, pPb and Pb+Pb collisions with the ATLAS detectorNuclear Physics - ExperimentTwo-particle pseudorapidity correlations are measured in 2.76 TeV Pb+Pb, 5.02 TeV pPb and 13 TeV pp collisions. Correlation function is measured using charged particles in the pseudorapidity range $|\eta|<2.4$ with transverse momentum $p_T>0.2$ GeV, and it is measured as a function of event multiplicity, defined by number of charged particles with $|\eta|<2.5$ and $p_T>0.4$ GeV. The correlation function is decomposed into a short-range component (SRC) and a long-range component (LRC). The SRC differs significantly between the opposite-charge pairs and same-charge pairs, and between the three collision systems at similar multiplicity. The LRC is described approximately by $1+\langle a_1^2\rangle\eta_1\eta_2$ in all collision systems over the full multiplicity range. The values of $\langle a_1^2\rangle$ are consistent between the opposite-charge and same-charge pairs, and are similar for the three collision systems at similar multiplicity. The values of $\langle a_1^2\rangle$ and the magnitude of the SRC both follow a power-law dependence on the event multiplicity.Two-particle pseudorapidity correlations are measured in sNN=2.76 TeV Pb+Pb, sNN=5.02 TeV p +Pb and s=13 TeV pp collisions [ATLAS Collaboration, ATLAS-CONF-2015-051; ATLAS-CONF-2015-020]. Correlation function is measured using charged particles in the pseudorapidity range |η|<2.4 with transverse momentum pT>0.2 GeV , and it is measured as a function of event multiplicity, defined by number of charged particles with |η|<2.5 and pT>0.4 GeV . The correlation function is decomposed into a short-range component (SRC) and a long-range component (LRC). The SRC differs significantly between the opposite-charge pairs and same-charge pairs, and between the three collision systems at similar multiplicity. The LRC is described approximately by 1+〈a12〉η1η2 in all collision systems over the full multiplicity range. The values of 〈a12〉 are consistent between the opposite-charge and same-charge pairs, and are similar for the three collision systems at similar multiplicity. The values of 〈a12〉 and the magnitude of the SRC both follow a power-law dependence on the event multiplicity.Two-particle pseudorapidity correlations are measured in 2.76 TeV Pb+Pb, 5.02 TeV pPb and 13 TeV pp collisions. Correlation function is measured using charged particles in the pseudorapidity range $|\eta|<2.4$ with transverse momentum $p_T>0.2$ GeV, and it is measured as a function of event multiplicity, defined by number of charged particles with $|\eta|<2.5$ and $p_T>0.4$ GeV. The correlation function is decomposed into a short-range component (SRC) and a long-range component (LRC). The SRC differs significantly between the opposite-charge pairs and same-charge pairs, and between the three collision systems at similar multiplicity. The LRC is described approximately by $1+\langle a_1^2\rangle\eta_1\eta_2$ in all collision systems over the full multiplicity range. The values of $\langle a_1^2\rangle$ are consistent between the opposite-charge and same-charge pairs, and are similar for the three collision systems at similar multiplicity. The values of $\langle a_1^2\rangle$ and the magnitude of the SRC both follow a power-law dependence on the event multiplicity.arXiv:1601.01296oai:cds.cern.ch:21197452016-01-06 |
spellingShingle | Nuclear Physics - Experiment Jia, Jiangyong Forward-backward multiplicity correlations in pp, pPb and Pb+Pb collisions with the ATLAS detector |
title | Forward-backward multiplicity correlations in pp, pPb and Pb+Pb collisions with the ATLAS detector |
title_full | Forward-backward multiplicity correlations in pp, pPb and Pb+Pb collisions with the ATLAS detector |
title_fullStr | Forward-backward multiplicity correlations in pp, pPb and Pb+Pb collisions with the ATLAS detector |
title_full_unstemmed | Forward-backward multiplicity correlations in pp, pPb and Pb+Pb collisions with the ATLAS detector |
title_short | Forward-backward multiplicity correlations in pp, pPb and Pb+Pb collisions with the ATLAS detector |
title_sort | forward-backward multiplicity correlations in pp, ppb and pb+pb collisions with the atlas detector |
topic | Nuclear Physics - Experiment |
url | https://dx.doi.org/10.1016/j.nuclphysa.2016.02.044 http://cds.cern.ch/record/2119745 |
work_keys_str_mv | AT jiajiangyong forwardbackwardmultiplicitycorrelationsinppppbandpbpbcollisionswiththeatlasdetector |