Cargando…

Correlations of high-$p_T$ hadrons and jets in ALICE

There are two prominent experimental signatures of quark–gluon plasma creation in ultra-relativistic heavy-ion collisions: the jet quenching phenomenon and the azimuthal-momentum space-anisotropy of final-state particle emission. Recently, the latter signature was also observed in lighter collision...

Descripción completa

Detalles Bibliográficos
Autor principal: Krizek, Filip
Lenguaje:eng
Publicado: 2019
Materias:
Acceso en línea:https://dx.doi.org/10.3390/universe5050124
http://cds.cern.ch/record/2697249
_version_ 1780964222077763584
author Krizek, Filip
author_facet Krizek, Filip
author_sort Krizek, Filip
collection CERN
description There are two prominent experimental signatures of quark–gluon plasma creation in ultra-relativistic heavy-ion collisions: the jet quenching phenomenon and the azimuthal-momentum space-anisotropy of final-state particle emission. Recently, the latter signature was also observed in lighter collision systems such as p–Pb or pp. This raises a natural question of whether in these systems, the observed collectivity is also accompanied by jet quenching. In this paper, we overview ALICE measurements of the jet quenching phenomenon studied using semi-inclusive distributions of track-based jets recoiling from a high-transverse momentum ($p_T$) hadron trigger in Pb–Pb and p–Pb collisions at LHC energies. The constructed coincidence observable, the per trigger normalized yield of associated recoil jets, is corrected for the complex uncorrelated jet background, including multi-partonic interactions, using a data-driven statistical subtraction method. In the p–Pb data,the observable was measured in events with different underlying event activity and was utilized to set an upper limit on the average medium-induced out-of-cone energy transport for jets with resolution parameter $R=0.4$. The associated jet momentum shift was found to be less than 0.4 GeV/$c$ at 90% confidence.
id oai-inspirehep.net-1739492
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2019
record_format invenio
spelling oai-inspirehep.net-17394922022-08-10T12:20:15Zdoi:10.3390/universe5050124http://cds.cern.ch/record/2697249engKrizek, FilipCorrelations of high-$p_T$ hadrons and jets in ALICEParticle Physics - ExperimentNuclear Physics - ExperimentThere are two prominent experimental signatures of quark–gluon plasma creation in ultra-relativistic heavy-ion collisions: the jet quenching phenomenon and the azimuthal-momentum space-anisotropy of final-state particle emission. Recently, the latter signature was also observed in lighter collision systems such as p–Pb or pp. This raises a natural question of whether in these systems, the observed collectivity is also accompanied by jet quenching. In this paper, we overview ALICE measurements of the jet quenching phenomenon studied using semi-inclusive distributions of track-based jets recoiling from a high-transverse momentum ($p_T$) hadron trigger in Pb–Pb and p–Pb collisions at LHC energies. The constructed coincidence observable, the per trigger normalized yield of associated recoil jets, is corrected for the complex uncorrelated jet background, including multi-partonic interactions, using a data-driven statistical subtraction method. In the p–Pb data,the observable was measured in events with different underlying event activity and was utilized to set an upper limit on the average medium-induced out-of-cone energy transport for jets with resolution parameter $R=0.4$. The associated jet momentum shift was found to be less than 0.4 GeV/$c$ at 90% confidence.oai:inspirehep.net:17394922019
spellingShingle Particle Physics - Experiment
Nuclear Physics - Experiment
Krizek, Filip
Correlations of high-$p_T$ hadrons and jets in ALICE
title Correlations of high-$p_T$ hadrons and jets in ALICE
title_full Correlations of high-$p_T$ hadrons and jets in ALICE
title_fullStr Correlations of high-$p_T$ hadrons and jets in ALICE
title_full_unstemmed Correlations of high-$p_T$ hadrons and jets in ALICE
title_short Correlations of high-$p_T$ hadrons and jets in ALICE
title_sort correlations of high-$p_t$ hadrons and jets in alice
topic Particle Physics - Experiment
Nuclear Physics - Experiment
url https://dx.doi.org/10.3390/universe5050124
http://cds.cern.ch/record/2697249
work_keys_str_mv AT krizekfilip correlationsofhighpthadronsandjetsinalice