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### Study of the production yield of J/psi and single muons in collisions protn-proton with the muon spectrometer of the ALICE experiment at LHC

Lenhardt, Matthieu
Hyper Article en Ligne (CCSd), Hyper Article en Ligne Open Access (CCSd)
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Title: Study of the production yield of J/psi and single muons in collisions protn-proton with the muon spectrometer of the ALICE experiment at LHC
Author: Lenhardt, Matthieu
Date: 08 December 2011
Subject: Physics ; Nuclear Experiment ; Quark-Gluon Plasma ; Alice ; Muon Spectrometer ; Cosmic Rays ; Tracking Efficiency ; Charged Particle Multiplicity ; P-P Collisions ; Single Muons ; J/Psi ; Muons Simples ; Multiplicité En Particules Chargées ; Collisions P-P ; Efficacité de Trajectographie ; Rayonnement Cosmique ; Plasma de Quarks et Gluons
Description: The quark-gluon plasma is a state of nuclear matter appearing at very high temperature. In the laboratory, it is possible to reach such conditions using heavy-ion collisions at ultra-relativistic energies. The ALICE experiment at LHC is dedicated to the study of the quark-gluon plasma with Pb-Pb collisions at 2.76 TeV. The first part of this study, presented as an annex, will consist in the very first results of the ALICE muon spectrometer, obtained using cosmic rays. The second part will present the evolution of the reconstruction efficiency of the muon spectrometer during its first two years of running. This study will show that the total reconstruction efficiency of the tracking chamber is more than 90% in proton-proton collisions, and 85% in lead-lead collisions. A track selection method based on the value of the product momentum - distance of closest approach will also be presented. This selection will allow to remove the tracks coming from muons produced in collisions...
• Several versions

### Measurement of prompt J/ ψ and beauty hadron production cross sections at mid-rapidity in pp collisions at $\sqrt{s}=7$ TeV

Journal of High Energy Physics, 2012, Vol.2012(11), pp.1-31 [Peer Reviewed Journal]

• Several versions

### Underlying Event measurements in pp collisions at and 7 TeV with the ALICE experiment at the LHC

Quintana, Arian, Rinella, Gianluca, Agostinelli, Andrea, Nazeer, Ahmad, Ahmad, Arshad, Ahn, Sang, Bruno, Alessandro, Alici, Andrea, Alt, Torsten, Anson, Christopher, Tome, Anticic, Aphecetche, Laurent, Arcelli, Silvia, Arend, Andreas, Arnaldi, Roberta, Aronsson, Tomas, Arsene, Ionut, Averbeck, Ralf, Awes, Terry, Bach
Journal of High Energy Physics, Jul 2012, Vol.2012(7) [Peer Reviewed Journal]

• Several versions