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Jet results in heavy ion collisions with the ATLAS experiment at the LHC

In relativistic collisions of heavy ions, a hot medium with a high density of unscreened color charges is produced, and jets propagating through this medium are known to suffer energy loss. This results in several distinct effects seen in central heavy ion collisions: the yield of inclusive jets mea...

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Autor principal: Perepelitsa, Dennis
Lenguaje:eng
Publicado: 2015
Materias:
Acceso en línea:http://cds.cern.ch/record/2040066
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author Perepelitsa, Dennis
author_facet Perepelitsa, Dennis
author_sort Perepelitsa, Dennis
collection CERN
description In relativistic collisions of heavy ions, a hot medium with a high density of unscreened color charges is produced, and jets propagating through this medium are known to suffer energy loss. This results in several distinct effects seen in central heavy ion collisions: the yield of inclusive jets measured via the nuclear modification factor is observed to be strongly suppressed; the yield of events with highly asymmetric dijet pairs is observed to be increased; the jet fragmentation is modified. In proton-lead collisions, the production of hard processes is expected to be modified via a modification of nuclear parton distribution functions. While the theory predicts rather small effects to be observed, the data show interesting unexpected features: the nuclear modification factor exhibits a strong centrality dependence; charged particle spectra show an enhancement at large transverse momenta with respect to the proton-proton reference. In this talk, we will summarize the most recent results by ATLAS involving these striking phenomena.
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institution Organización Europea para la Investigación Nuclear
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spelling cern-20400662019-09-30T06:29:59Zhttp://cds.cern.ch/record/2040066engPerepelitsa, DennisJet results in heavy ion collisions with the ATLAS experiment at the LHCParticle Physics - ExperimentIn relativistic collisions of heavy ions, a hot medium with a high density of unscreened color charges is produced, and jets propagating through this medium are known to suffer energy loss. This results in several distinct effects seen in central heavy ion collisions: the yield of inclusive jets measured via the nuclear modification factor is observed to be strongly suppressed; the yield of events with highly asymmetric dijet pairs is observed to be increased; the jet fragmentation is modified. In proton-lead collisions, the production of hard processes is expected to be modified via a modification of nuclear parton distribution functions. While the theory predicts rather small effects to be observed, the data show interesting unexpected features: the nuclear modification factor exhibits a strong centrality dependence; charged particle spectra show an enhancement at large transverse momenta with respect to the proton-proton reference. In this talk, we will summarize the most recent results by ATLAS involving these striking phenomena.ATL-PHYS-SLIDE-2015-443oai:cds.cern.ch:20400662015-08-03
spellingShingle Particle Physics - Experiment
Perepelitsa, Dennis
Jet results in heavy ion collisions with the ATLAS experiment at the LHC
title Jet results in heavy ion collisions with the ATLAS experiment at the LHC
title_full Jet results in heavy ion collisions with the ATLAS experiment at the LHC
title_fullStr Jet results in heavy ion collisions with the ATLAS experiment at the LHC
title_full_unstemmed Jet results in heavy ion collisions with the ATLAS experiment at the LHC
title_short Jet results in heavy ion collisions with the ATLAS experiment at the LHC
title_sort jet results in heavy ion collisions with the atlas experiment at the lhc
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2040066
work_keys_str_mv AT perepelitsadennis jetresultsinheavyioncollisionswiththeatlasexperimentatthelhc