$Υ$ production in p-Pb and Pb-Pb collisions with ALICE at the LHC

• DOI: 10.48550/arxiv.1612.06691
• Publication Date: 2016-01-01
• Authors: G. G. Fronzé
• Keywords: High Energy Physics - Experiment (hep-ex); FOS: Physical sciences; Nuclear Experiment (nucl-ex); 7. Clean energy

ALICE (A Large Ion Collider Experiment) is devoted to the study of heavy-ion collisions at LHC energies. In such a deconfined state nuclear matter, Quark-Gluon Plasma (QGP), formed. Due their early production, quarkonium states are good probes QGP evolution. Such affected by suppression mechanisms which lead reduced yields with respect pp and p-Pb collisions, while regeneration phenomena might an enhancement production. The latter effects expected be negligible for bottomonium states. recent results on $\Upsilon$ production in Pb-Pb $\sqrt{s_{\rm NN}}=5.02\;\rm{T}e\rm{V}$ will presented compared previous measurements NN}}=2.76\;\rm{T}e\rm{V}$. A comparison theoretical calculations performed as well. Results obtained also discussed.