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Latest results of hadronic resonance production with ALICE at the LHC

Resonances with very short lifetimes can be used to probe the rescattering and regeneration ~ processes in the hadronic phase of the system produced after a high-energy collisions. These processes are studied by measuring resonance yields as a function of the system size and collision energy and com...

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Autor principal: Mallick, Dukhishyam
Lenguaje:eng
Publicado: 2022
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.380.0226
http://cds.cern.ch/record/2836697
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author Mallick, Dukhishyam
author_facet Mallick, Dukhishyam
author_sort Mallick, Dukhishyam
collection CERN
description Resonances with very short lifetimes can be used to probe the rescattering and regeneration ~ processes in the hadronic phase of the system produced after a high-energy collisions. These processes are studied by measuring resonance yields as a function of the system size and collision energy and comparing them to model calculations with and without the hadronic cascades. We present measurements of transverse momentum spectra, integrated yields ($\mathrm{d}N/\mathrm{d}y$), mean transverse momenta ($\langle {p}_\mathrm{T} \rangle$), and angular distributions for light flavor hadronic resonances in pp, p--Pb, Xe--Xe, and Pb--Pb collisions at LHC energies. The $\langle {p}_\mathrm{T} \rangle$ of resonances as a function of event multiplicity in central Pb--Pb collisions follow the same mass ordering as for other hadrons, expected from the hydrodynamic expansion of the system. At high $p_\mathrm{T}$ ($>$ 8 GeV/$c$), nuclear modification factor ($R_\mathrm{AA}$) of light flavor hadrons in central Pb--Pb collisions shows strong suppression, whereas the nuclear modification factor in p--Pb collisions, known as $R_{\mathrm{pPb}}$ is consistent with unity. This parton energy loss effect is independent of the particle species. Further, in non-central heavy-ion collisions, the vector mesons can be polarized due to spin-orbital-angular-momentum interaction or hadronization from polarized quarks due to their significant initial angular momentum. Recent measurements of spin alignment for K$^{∗0}$ and $\phi$ mesons produced at midrapidity in pp and Pb--Pb collisions are discussed.
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language eng
publishDate 2022
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spelling cern-28366972022-10-13T19:32:23Zdoi:10.22323/1.380.0226http://cds.cern.ch/record/2836697engMallick, DukhishyamLatest results of hadronic resonance production with ALICE at the LHCNuclear Physics - ExperimentParticle Physics - ExperimentResonances with very short lifetimes can be used to probe the rescattering and regeneration ~ processes in the hadronic phase of the system produced after a high-energy collisions. These processes are studied by measuring resonance yields as a function of the system size and collision energy and comparing them to model calculations with and without the hadronic cascades. We present measurements of transverse momentum spectra, integrated yields ($\mathrm{d}N/\mathrm{d}y$), mean transverse momenta ($\langle {p}_\mathrm{T} \rangle$), and angular distributions for light flavor hadronic resonances in pp, p--Pb, Xe--Xe, and Pb--Pb collisions at LHC energies. The $\langle {p}_\mathrm{T} \rangle$ of resonances as a function of event multiplicity in central Pb--Pb collisions follow the same mass ordering as for other hadrons, expected from the hydrodynamic expansion of the system. At high $p_\mathrm{T}$ ($>$ 8 GeV/$c$), nuclear modification factor ($R_\mathrm{AA}$) of light flavor hadrons in central Pb--Pb collisions shows strong suppression, whereas the nuclear modification factor in p--Pb collisions, known as $R_{\mathrm{pPb}}$ is consistent with unity. This parton energy loss effect is independent of the particle species. Further, in non-central heavy-ion collisions, the vector mesons can be polarized due to spin-orbital-angular-momentum interaction or hadronization from polarized quarks due to their significant initial angular momentum. Recent measurements of spin alignment for K$^{∗0}$ and $\phi$ mesons produced at midrapidity in pp and Pb--Pb collisions are discussed.oai:cds.cern.ch:28366972022
spellingShingle Nuclear Physics - Experiment
Particle Physics - Experiment
Mallick, Dukhishyam
Latest results of hadronic resonance production with ALICE at the LHC
title Latest results of hadronic resonance production with ALICE at the LHC
title_full Latest results of hadronic resonance production with ALICE at the LHC
title_fullStr Latest results of hadronic resonance production with ALICE at the LHC
title_full_unstemmed Latest results of hadronic resonance production with ALICE at the LHC
title_short Latest results of hadronic resonance production with ALICE at the LHC
title_sort latest results of hadronic resonance production with alice at the lhc
topic Nuclear Physics - Experiment
Particle Physics - Experiment
url https://dx.doi.org/10.22323/1.380.0226
http://cds.cern.ch/record/2836697
work_keys_str_mv AT mallickdukhishyam latestresultsofhadronicresonanceproductionwithaliceatthelhc