# Étude de la production des quarkonia J/Ψ, Ψ' et ϒ en fonction de la multiplicité de traces chargées dans les collisions proton-proton à 8 TeV au LHC avec l'expérience ALICE

Abstract : One of the main goal of the ALICE experiment at LHC is the study of quarkonia. This particles are probe of the quark-gluon plasma (QGP). Quarkonia production rate is sensitive to the formation of the QGP. However, quarkonia production mechanisms are not completely understood in proton-proton collisions. To improve our comprehension of these mechanisms, quarkonia production as a function of charged particles was proposed as a new observable. In this report, I will discuss the measurement of quarkonia production as a function of charged particle multiplicity in pp collisions at ps = 8 TeV. Systematic uncertainties due to the signal extraction via fit on di-muon invariant mass spectrum are studied.
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Master Thesis
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Cited literature [21 references]

https://dumas.ccsd.cnrs.fr/dumas-01231230
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Submitted on : Wednesday, December 9, 2015 - 9:11:46 AM
Last modification on : Tuesday, April 20, 2021 - 12:00:15 PM
Long-term archiving on: : Friday, April 28, 2017 - 7:47:47 PM

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• HAL Id : dumas-01231230, version 1

### Citation

Hugues Noyer. Étude de la production des quarkonia J/Ψ, Ψ' et ϒ en fonction de la multiplicité de traces chargées dans les collisions proton-proton à 8 TeV au LHC avec l'expérience ALICE. Physique [physics]. 2015. ⟨dumas-01231230⟩

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