Quarkonia, i.e. bound states of b (b) over bar and c (c) over bar quarks, are powerful observables to study the properties of nuclear matter under extreme conditions. The formation of a Quark-Gluon Plasma (QGP), which is predicted by lattice QCD calculations at high temperatures as reached at the LHC energies, has a strong influence on the production and behavior of quarkonia. The latest ALICE results on bottomonium and charmonium production in nucleus-nucleus collisions are presented. This includes measurements of the gamma(1S) and gamma(2S) nuclear modification factor (R-AA) at forward rapidity and the J/psi R-AA and v(2) as a function of centrality, P-T and rapidity in Pb-Pb collisions at root S-NN = 5.02 TeV. Also, first results from J/psi measurements in Xe-Xe collisions at root S-NN = 5.44 TeV are presented. Further on, the experimental results are compared to various calculations from theoretical models.

Quarkonium measurements in nucleus-nucleus collisions with ALICE

Di Ruzza B;
2019-01-01

Abstract

Quarkonia, i.e. bound states of b (b) over bar and c (c) over bar quarks, are powerful observables to study the properties of nuclear matter under extreme conditions. The formation of a Quark-Gluon Plasma (QGP), which is predicted by lattice QCD calculations at high temperatures as reached at the LHC energies, has a strong influence on the production and behavior of quarkonia. The latest ALICE results on bottomonium and charmonium production in nucleus-nucleus collisions are presented. This includes measurements of the gamma(1S) and gamma(2S) nuclear modification factor (R-AA) at forward rapidity and the J/psi R-AA and v(2) as a function of centrality, P-T and rapidity in Pb-Pb collisions at root S-NN = 5.02 TeV. Also, first results from J/psi measurements in Xe-Xe collisions at root S-NN = 5.44 TeV are presented. Further on, the experimental results are compared to various calculations from theoretical models.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11369/426455
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 1
social impact