Skip to Main content Skip to Navigation
Theses

Étude de la production inclusive de J/Ψ dans les collisions Pb-Pb à √sNN=2,76 TeV avec le spectromètre à muons de l'expérience ALICE au LHC

Abstract : The quantum chromodynamics theory predicts the existence of a deconfined state of matter called Quark Gluon Plasma (QGP). Experimentally, the formation of a QGP is expected under the extreme conditions of temperature and density reached in ultra-relativisticheavy-ion collisions. Many observables were proposed to observe and characterize indirectly such a state of matter. In particular, the phenomena of suppression and (re)combination of the J/Ψ meson in the QGP are extensively studied. This thesis presents the analysis of the inclusive production of J/Ψ in Pb-Pb collisions, at a center of mass energy √sNN = 2.76 TeV, detected with the ALICE muon spectrometer at the LHC. From the high statistics of events collected during 2011 datataking, the J/Ψ nuclear modification factor was measured as a function of transverse momentum, rapidity and collision centrality. The J/Ψ mean transverse momentum was also measured as a function of centrality. The predictions of theoretical models, all including a (re)combination contribution, are in good agreement with data. Finally, an excess of J/Ψ yield at very low transverse momentum (<300 MeV/c) with respect to the expected hadronic production was observed fort he first time.
Document type :
Theses
Complete list of metadata

https://tel.archives-ouvertes.fr/tel-01044653
Contributor : Abes Star :  Contact
Submitted on : Thursday, July 24, 2014 - 8:37:09 AM
Last modification on : Friday, June 22, 2018 - 9:31:55 AM
Long-term archiving on: : Tuesday, November 25, 2014 - 3:35:52 PM

File

pdf2star-1405597974-Lardeux_A_...
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01044653, version 1

Citation

Antoine Lardeux. Étude de la production inclusive de J/Ψ dans les collisions Pb-Pb à √sNN=2,76 TeV avec le spectromètre à muons de l'expérience ALICE au LHC. Physique Nucléaire Théorique [nucl-th]. Ecole des Mines de Nantes, 2014. Français. ⟨NNT : 2014EMNA0129⟩. ⟨tel-01044653⟩

Share

Metrics

Record views

798

Files downloads

4804