Modification of jet-like correlations in Pb - Au at the SPS

A high statistics study of high-$p_t$ two-particle azimuthal correlations in Pb-Au at $\sqrt{s_{\rm NN}}=17.2$ GeV, performed by the CERES experiment at the CERN-SPS, is presented. A broad away-side correlation with significant dip at $\Delta\phi\approx\pi$ is observed. The shape and magnitude of th...

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Detalles Bibliográficos
Autores principales: Appelshauser, Harald, Kniege, Stefan
Lenguaje:eng
Publicado: 2009
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysa.2009.10.137
http://cds.cern.ch/record/1196042
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author Appelshauser, Harald
Kniege, Stefan
author_facet Appelshauser, Harald
Kniege, Stefan
author_sort Appelshauser, Harald
collection CERN
description A high statistics study of high-$p_t$ two-particle azimuthal correlations in Pb-Au at $\sqrt{s_{\rm NN}}=17.2$ GeV, performed by the CERES experiment at the CERN-SPS, is presented. A broad away-side correlation with significant dip at $\Delta\phi\approx\pi$ is observed. The shape and magnitude of the correlation is similar to measurements at RHIC. In comparison to PYTHIA calculations, we observe a significant excess of soft particles at the away-side. A study of charge correlations between trigger and associated particles disfavors vacuum fragmentation of the away-side jet and suggests significant energy transfer of the hard-scattered parton to the medium.
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institution Organización Europea para la Investigación Nuclear
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publishDate 2009
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spelling cern-11960422019-09-30T06:29:59Zdoi:10.1016/j.nuclphysa.2009.10.137http://cds.cern.ch/record/1196042engAppelshauser, HaraldKniege, StefanModification of jet-like correlations in Pb - Au at the SPSNuclear Physics - ExperimentA high statistics study of high-$p_t$ two-particle azimuthal correlations in Pb-Au at $\sqrt{s_{\rm NN}}=17.2$ GeV, performed by the CERES experiment at the CERN-SPS, is presented. A broad away-side correlation with significant dip at $\Delta\phi\approx\pi$ is observed. The shape and magnitude of the correlation is similar to measurements at RHIC. In comparison to PYTHIA calculations, we observe a significant excess of soft particles at the away-side. A study of charge correlations between trigger and associated particles disfavors vacuum fragmentation of the away-side jet and suggests significant energy transfer of the hard-scattered parton to the medium.A study of high- p t two-particle azimuthal correlations in Pb-Au at S NN = 17 , 2 GeV by the CERES experiment at the CERN-SPS, is presented. A broad away-side correlation with significant dip at Δ ϕ ≈ π is observed. The shape and magnitude of the correlation is similar to measurements at RHIC. In comparison to PYTHIA calculations, we observe a significant excess of soft particles at the away-side. A study of charge correlations between trigger and associated particles disfavors vacuum fragmentation of the away-side jet and suggests significant energy transfer of the hard-scattered parton to the medium.A high statistics study of high-$p_t$ two-particle azimuthal correlations in Pb-Au at $\sqrt{s_{\rm NN}}=17.2$ GeV, performed by the CERES experiment at the CERN-SPS, is presented. A broad away-side correlation with significant dip at $\Delta\phi\approx\pi$ is observed. The shape and magnitude of the correlation is similar to measurements at RHIC. In comparison to PYTHIA calculations, we observe a significant excess of soft particles at the away-side. A study of charge correlations between trigger and associated particles disfavors vacuum fragmentation of the away-side jet and suggests significant energy transfer of the hard-scattered parton to the medium.arXiv:0907.5573oai:cds.cern.ch:11960422009-08-03
spellingShingle Nuclear Physics - Experiment
Appelshauser, Harald
Kniege, Stefan
Modification of jet-like correlations in Pb - Au at the SPS
title Modification of jet-like correlations in Pb - Au at the SPS
title_full Modification of jet-like correlations in Pb - Au at the SPS
title_fullStr Modification of jet-like correlations in Pb - Au at the SPS
title_full_unstemmed Modification of jet-like correlations in Pb - Au at the SPS
title_short Modification of jet-like correlations in Pb - Au at the SPS
title_sort modification of jet-like correlations in pb - au at the sps
topic Nuclear Physics - Experiment
url https://dx.doi.org/10.1016/j.nuclphysa.2009.10.137
http://cds.cern.ch/record/1196042
work_keys_str_mv AT appelshauserharald modificationofjetlikecorrelationsinpbauatthesps
AT kniegestefan modificationofjetlikecorrelationsinpbauatthesps

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