# Bottomonium production in p-Pb and Pb-Pb collisions in ALICE

- Institution: CERN
- Department: LHC Seminar
- Speaker: Javier Castillo Castellanos
- Year: 2015
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3016112)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Quarkonium measurements play a crucial role in the investigation of the properties of the deconfined state of nuclear matter, the Quark-Gluon Plasma (QGP), produced in ultra-relativistic heavy ion collisions. In particular, the sequential suppression of the quarkonium states by colour screening has long been suggested as a signature and thermometer of the QGP.

The first results on charmonium suppression in Pb-Pb collisions at the LHC seem to indicate that, in addition to suppression mechanisms, a regeneration mechanism also plays a role. For bottomonia, such regeneration mechanism is expected to be small due to the smaller number of initial b-bbar pairs compared to c-cbar pairs. Initial state effects can also modify bottomonium production in Pb-Pb collisions. Initial state effects or Cold Nuclear Matter effects can be studied using proton-nucleus collisions, where no deconfined medium is expected to be created.

We will present the final results from Run1 on bottomonium production in p-Pb and Pb-Pb collisions measured with the ALICE muon spectrometer at forward-rapidity. The results will be compared to theoretical models and to other experimental results at LHC. .

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## Lectures

1. [Bottomonium production in p-Pb and Pb-Pb collisions in ALICE](https://invisiblenetwork.ai/learn/cern/3016112/3c593aedb8c9), 1 h 2 min (CERN's player)