eprintid: 31143
rev_number: 16
eprint_status: archive
userid: 6435
dir: disk0/00/03/11/43
datestamp: 2022-01-19 07:23:07
lastmod: 2022-02-14 12:49:04
status_changed: 2022-01-19 07:23:07
type: doctoralThesis
metadata_visibility: show
creators_name: Gromada, Alena
title: Inclusive J/ψ production in Pb–Pb collisions at √s_NN = 5.02 TeV with ALICE
title_de: Messung der inklusiven Produktion von J/ψ Mesonen bei mittlerer Rapidität in Pb{Pb Kollisionen bei √s_NN = 5.02 TeV mit ALICE
subjects: 500
subjects: 530
divisions: 130200
adv_faculty: af-13
cterms_swd: quark-gluon plasma
cterms_swd: heavy-ion collisions
cterms_swd: J/ψ meson
cterms_swd: (re)generation
abstract: The J/ψ mesons is a bound state of a charm quark and its anti-quark. The production of J/ψ mesons serves as an important probe of the quark-gluon plasma (QGP) formed in heavy-ion collisions. The presence of the deconfined strongly interacting medium results in the color screening of the potential between charm quarks and anti-quarks created during hard scattering processes. At sufficiently high collision energies such as the LHC energy, the large abundance of produced charm quarks leads to the (re)generation of J/ψ mesons during the QGP evolution and/or at the phase boundary.
In this work, the J/ψ production yield in Pb–Pb collisions at √s_NN = 5.02 TeV recorded by
ALICE is measured at midrapidity via the dielectron decay channel J/ψ → e+e− as a function of centrality and as a function of transverse momentum down to p_T = 0.15 GeV/c in the most central and semi-central collisions. The J/ψ nuclear modification factor R_AA increases slightly from
semi-central to the most central collisions. The p_T -differential J/ψ R_AA shows a large suppression of the J/ψ yield at high p_T and the J/ψ R_AA increases with decreasing p_T. The measurement is compared to other experimental results and to model calculations. The presented results strongly support picture of (re)generation as an important J/ψ production mechanism at the LHC especially significant at low p T and at midrapidity.
date: 2022
id_scheme: DOI
id_number: 10.11588/heidok.00031143
ppn_swb: 1788396537
own_urn: urn:nbn:de:bsz:16-heidok-311431
date_accepted: 2021-11-22
advisor: HASH(0x5634a29a3f18)
language: eng
bibsort: GROMADAALEINCLUSIVEJ2022
full_text_status: public
place_of_pub: Heidelberg
citation:   Gromada, Alena  (2022) Inclusive J/ψ production in Pb–Pb collisions at √s_NN = 5.02 TeV with ALICE.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/31143/1/THESIS_Alena_Gromada.pdf