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Measurements of the fluctuations of identified particles in ALICE at the LHC

The event-by-event fluctuations of identified particles in ultrarelativistic nucleus-nucleus collisions give information about the state of matter created in these collisions as well as the phase diagram of nuclear matter. In this proceedings, we present the latest results from ALICE on the centrali...

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Autor principal: Ohlson, Alice
Lenguaje:eng
Publicado: SISSA 2019
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.311.0031
http://cds.cern.ch/record/2652841
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author Ohlson, Alice
author_facet Ohlson, Alice
author_sort Ohlson, Alice
collection CERN
description The event-by-event fluctuations of identified particles in ultrarelativistic nucleus-nucleus collisions give information about the state of matter created in these collisions as well as the phase diagram of nuclear matter. In this proceedings, we present the latest results from ALICE on the centrality and pseudorapidity dependence of net-proton fluctuations, which are closely related to net-baryon fluctuations, as well as net-kaon and net-pion fluctuations. The effects of volume fluctuations and global baryon conservation on these observables are discussed. Furthermore, the correlated fluctuations between different particle species, quantified by the observable $\nu_{dyn}$, are also shown as functions of multiplicity and collision energy and are compared with Monte Carlo models. These measurements are performed in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV using the novel Identity Method and take advantage of the excellent particle identification capabilities of ALICE.
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institution Organización Europea para la Investigación Nuclear
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publisher SISSA
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spelling cern-26528412021-09-16T02:25:14Zdoi:10.22323/1.311.0031doi:10.22323/1.311.0031http://cds.cern.ch/record/2652841engOhlson, AliceMeasurements of the fluctuations of identified particles in ALICE at the LHChep-exParticle Physics - Experimentnucl-exNuclear Physics - ExperimentThe event-by-event fluctuations of identified particles in ultrarelativistic nucleus-nucleus collisions give information about the state of matter created in these collisions as well as the phase diagram of nuclear matter. In this proceedings, we present the latest results from ALICE on the centrality and pseudorapidity dependence of net-proton fluctuations, which are closely related to net-baryon fluctuations, as well as net-kaon and net-pion fluctuations. The effects of volume fluctuations and global baryon conservation on these observables are discussed. Furthermore, the correlated fluctuations between different particle species, quantified by the observable $\nu_{dyn}$, are also shown as functions of multiplicity and collision energy and are compared with Monte Carlo models. These measurements are performed in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV using the novel Identity Method and take advantage of the excellent particle identification capabilities of ALICE.SISSAarXiv:1901.00709oai:cds.cern.ch:26528412019-01-03
spellingShingle hep-ex
Particle Physics - Experiment
nucl-ex
Nuclear Physics - Experiment
Ohlson, Alice
Measurements of the fluctuations of identified particles in ALICE at the LHC
title Measurements of the fluctuations of identified particles in ALICE at the LHC
title_full Measurements of the fluctuations of identified particles in ALICE at the LHC
title_fullStr Measurements of the fluctuations of identified particles in ALICE at the LHC
title_full_unstemmed Measurements of the fluctuations of identified particles in ALICE at the LHC
title_short Measurements of the fluctuations of identified particles in ALICE at the LHC
title_sort measurements of the fluctuations of identified particles in alice at the lhc
topic hep-ex
Particle Physics - Experiment
nucl-ex
Nuclear Physics - Experiment
url https://dx.doi.org/10.22323/1.311.0031
https://dx.doi.org/10.22323/1.311.0031
http://cds.cern.ch/record/2652841
work_keys_str_mv AT ohlsonalice measurementsofthefluctuationsofidentifiedparticlesinaliceatthelhc