About
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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The talk
Credits and licence
- Institution
- CERN
- Department
- LHC Seminar
- Speaker
- Javier Castillo Castellanos
- Year
- 2015
- Language
- English
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed