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Hadronization studies at the LHC with ALICE

Studies of the production of heavy-flavour baryons are of prominent importance to investigate hadronization mechanisms at the LHC, in particular through the study of the evolution of the baryon-over-meson production ratio. Measurements performed in pp and p--Pb collisions at the LHC have revealed un...

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Autor principal: Zhu, Jianhui
Lenguaje:eng
Publicado: SISSA 2021
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.390.0524
http://cds.cern.ch/record/2765257
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author Zhu, Jianhui
author_facet Zhu, Jianhui
author_sort Zhu, Jianhui
collection CERN
description Studies of the production of heavy-flavour baryons are of prominent importance to investigate hadronization mechanisms at the LHC, in particular through the study of the evolution of the baryon-over-meson production ratio. Measurements performed in pp and p--Pb collisions at the LHC have revealed unexpected features, qualitatively similar to what was observed in heavy-ion collisions and, in the charm sector, not in line with the expectations based on previous measurements from $\rm e^+e^-$ colliders and in ep collisions. These results suggest that charmed baryon formation might not be universal and that the baryon-over-meson ratio depends on the collision system or multiplicity.A review of ALICE measurements of charmed baryons, including $\rm \Lambda_c/D^0$ as a function of charged-particle multiplicity in pp, p--Pb and Pb--Pb collisions, $\rm \Sigma_c^{0, +, ++}/D^0$ and $\rm \Xi_c^{0, +}/D^0$ as a function of $p_{\rm T}$ in pp collisions and $\rm \Gamma(\Xi_c^0\rightarrow\Xi^-e^+\nu_e)/\Gamma(\Xi_c^0\rightarrow\Xi^-\pi^+)$, will be presented. Comparison to phenomenological models will be also discussed. Emphasis will be given to the discussion of the impact of these studies on the understanding of hadronization processes.
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spelling cern-27652572022-11-17T14:30:17Zdoi:10.22323/1.390.0524doi:10.22323/1.390.0524http://cds.cern.ch/record/2765257engZhu, JianhuiHadronization studies at the LHC with ALICEhep-exParticle Physics - ExperimentStudies of the production of heavy-flavour baryons are of prominent importance to investigate hadronization mechanisms at the LHC, in particular through the study of the evolution of the baryon-over-meson production ratio. Measurements performed in pp and p--Pb collisions at the LHC have revealed unexpected features, qualitatively similar to what was observed in heavy-ion collisions and, in the charm sector, not in line with the expectations based on previous measurements from $\rm e^+e^-$ colliders and in ep collisions. These results suggest that charmed baryon formation might not be universal and that the baryon-over-meson ratio depends on the collision system or multiplicity.A review of ALICE measurements of charmed baryons, including $\rm \Lambda_c/D^0$ as a function of charged-particle multiplicity in pp, p--Pb and Pb--Pb collisions, $\rm \Sigma_c^{0, +, ++}/D^0$ and $\rm \Xi_c^{0, +}/D^0$ as a function of $p_{\rm T}$ in pp collisions and $\rm \Gamma(\Xi_c^0\rightarrow\Xi^-e^+\nu_e)/\Gamma(\Xi_c^0\rightarrow\Xi^-\pi^+)$, will be presented. Comparison to phenomenological models will be also discussed. Emphasis will be given to the discussion of the impact of these studies on the understanding of hadronization processes.Studies of the production of heavy-flavour baryons are of prominent importance to investigate hadronization mechanisms at the LHC, in particular through the study of the evolution of the baryon-over-meson production ratio. Measurements performed in pp and p--Pb collisions at the LHC have revealed unexpected features, qualitatively similar to what was observed in heavy-ion collisions and, in the charm sector, not in line with the expectations based on previous measurements from $\rm e^+e^-$ colliders and in ep collisions. These results suggest that charmed baryon formation might not be universal and that the baryon-over-meson ratio depends on the collision system or multiplicity. A review of ALICE measurements of charmed baryons, including $\rm \Lambda_c^+/D^0$ as a function of charged-particle multiplicity in pp, p--Pb and Pb--Pb collisions, $\rm \Sigma_c^{0, +, ++}/D^0$ and $\rm \Xi_c^{0, +}/D^0$ as a function of $p_{\rm T}$ in pp collisions and $\rm \Gamma(\Xi_c^0\rightarrow\Xi^-e^+\nu_e)/\Gamma(\Xi_c^0\rightarrow\Xi^-\pi^+)$, will be presented. Comparison to phenomenological models will be also discussed. Emphasis will be given to the discussion of the impact of these studies on the understanding of hadronization processes.SISSAarXiv:2104.11309oai:cds.cern.ch:27652572021-04-22
spellingShingle hep-ex
Particle Physics - Experiment
Zhu, Jianhui
Hadronization studies at the LHC with ALICE
title Hadronization studies at the LHC with ALICE
title_full Hadronization studies at the LHC with ALICE
title_fullStr Hadronization studies at the LHC with ALICE
title_full_unstemmed Hadronization studies at the LHC with ALICE
title_short Hadronization studies at the LHC with ALICE
title_sort hadronization studies at the lhc with alice
topic hep-ex
Particle Physics - Experiment
url https://dx.doi.org/10.22323/1.390.0524
https://dx.doi.org/10.22323/1.390.0524
http://cds.cern.ch/record/2765257
work_keys_str_mv AT zhujianhui hadronizationstudiesatthelhcwithalice