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Quarkonium in ALICE: results on p-Pb and Pb-Pb collisions from LHC Run 2

<!--HTML--><p>In 1986, the modification of quarkonium production was first proposed as a signature of the formation of a Quark Gluon Plasma.&nbsp;While the central role of quarkonium in the understanding of the QGP is indisputable, the direct link between the expected sequential supp...

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Autor principal: Arnaldi, Roberta
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:http://cds.cern.ch/record/2261972
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author Arnaldi, Roberta
author_facet Arnaldi, Roberta
author_sort Arnaldi, Roberta
collection CERN
description <!--HTML--><p>In 1986, the modification of quarkonium production was first proposed as a signature of the formation of a Quark Gluon Plasma.&nbsp;While the central role of quarkonium in the understanding of the QGP is indisputable, the direct link between the expected sequential suppression,&nbsp;in a very hot medium, and the experimental observations is not yet completely settled.&nbsp;Several other mechanisms, related to either the formation of a hot medium, such as quarkonium regeneration, or to the presence of&nbsp;cold nuclear matter, are well-known key effects in the interpretation of the results.</p> <p>This talk reviews very recent LHC Run 2 results obtained with the ALICE detector, which is designed to study quarkonium in two rapidity ranges, &nbsp;at mid-rapidity ($|y|&lt;0.9$) in the dielectron decay channel and at forward rapidity ($2.5&lt;y&lt;4$) in the dimuon channel, both down to zero transverse&nbsp;momentum.&nbsp;Results on the J/$\psi$ nuclear modification factor ($R_{\rm{AA}}$) and azimuthal anisotropy, measured, with high precision, at the highest LHC&nbsp;Pb-Pb energy ($\sqrt{s_{\rm{NN}}}$= 5.02 TeV), will be presented. Results on the other quarkonium states as the loosely&nbsp;bound $\psi(2S)$ and the heavier bottomonium resonances will also be addressed.&nbsp;The impact of these measurements on our understanding of quarkonium production, absorption and regeneration in the hot QCD matter&nbsp;will be discussed by comparing both to results from lower energies and to theoretical predictions.&nbsp;Finally, results on $J/\psi$ production in p-Pb collisions at $\sqrt{s_{\rm{NN}}}$= 8.16 TeV will also be presented and compared to models including&nbsp;different sources of cold nuclear matter effects.</p>
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2017
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spelling cern-22619722022-11-02T22:33:06Zhttp://cds.cern.ch/record/2261972engArnaldi, RobertaQuarkonium in ALICE: results on p-Pb and Pb-Pb collisions from LHC Run 2Quarkonium in ALICE: results on p-Pb and Pb-Pb collisions from LHC Run 2LHC Seminar<!--HTML--><p>In 1986, the modification of quarkonium production was first proposed as a signature of the formation of a Quark Gluon Plasma.&nbsp;While the central role of quarkonium in the understanding of the QGP is indisputable, the direct link between the expected sequential suppression,&nbsp;in a very hot medium, and the experimental observations is not yet completely settled.&nbsp;Several other mechanisms, related to either the formation of a hot medium, such as quarkonium regeneration, or to the presence of&nbsp;cold nuclear matter, are well-known key effects in the interpretation of the results.</p> <p>This talk reviews very recent LHC Run 2 results obtained with the ALICE detector, which is designed to study quarkonium in two rapidity ranges, &nbsp;at mid-rapidity ($|y|&lt;0.9$) in the dielectron decay channel and at forward rapidity ($2.5&lt;y&lt;4$) in the dimuon channel, both down to zero transverse&nbsp;momentum.&nbsp;Results on the J/$\psi$ nuclear modification factor ($R_{\rm{AA}}$) and azimuthal anisotropy, measured, with high precision, at the highest LHC&nbsp;Pb-Pb energy ($\sqrt{s_{\rm{NN}}}$= 5.02 TeV), will be presented. Results on the other quarkonium states as the loosely&nbsp;bound $\psi(2S)$ and the heavier bottomonium resonances will also be addressed.&nbsp;The impact of these measurements on our understanding of quarkonium production, absorption and regeneration in the hot QCD matter&nbsp;will be discussed by comparing both to results from lower energies and to theoretical predictions.&nbsp;Finally, results on $J/\psi$ production in p-Pb collisions at $\sqrt{s_{\rm{NN}}}$= 8.16 TeV will also be presented and compared to models including&nbsp;different sources of cold nuclear matter effects.</p>oai:cds.cern.ch:22619722017
spellingShingle LHC Seminar
Arnaldi, Roberta
Quarkonium in ALICE: results on p-Pb and Pb-Pb collisions from LHC Run 2
title Quarkonium in ALICE: results on p-Pb and Pb-Pb collisions from LHC Run 2
title_full Quarkonium in ALICE: results on p-Pb and Pb-Pb collisions from LHC Run 2
title_fullStr Quarkonium in ALICE: results on p-Pb and Pb-Pb collisions from LHC Run 2
title_full_unstemmed Quarkonium in ALICE: results on p-Pb and Pb-Pb collisions from LHC Run 2
title_short Quarkonium in ALICE: results on p-Pb and Pb-Pb collisions from LHC Run 2
title_sort quarkonium in alice: results on p-pb and pb-pb collisions from lhc run 2
topic LHC Seminar
url http://cds.cern.ch/record/2261972
work_keys_str_mv AT arnaldiroberta quarkoniuminaliceresultsonppbandpbpbcollisionsfromlhcrun2