3-8 November 2013
Stellenbosch Institute for Advanced Study
Africa/Johannesburg timezone
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p-Pb collisions: particle production and centrality determination in ALICE.

7 Nov 2013, 13:30
20m
Table Mountain (Stellenbosch Institute for Advanced Study)

Table Mountain

Stellenbosch Institute for Advanced Study

Oral Initial State and Proton-Nucleus Collision Phenomena Initial State and Proton-Nucleus Collision Phenomena

Speaker

Dr Chiara Oppedisano (INFN, Torino, Italy)

Description

Proton-nucleus collisions are studied to disentangle initial state effects, already present in cold nuclear matter, from final state effects, expected only when a dense and hot medium is formed as in A-A collisions. The collisions can be characterized through the number of binary collisions the nucleons undergo. In p-Pb collisions, the low particle multiplicities and the large multiplicity fluctuations influence the way collisions are classified into different centrality classes using a particle multiplicity distribution. ALICE uses different estimators to measure event-by-event the number of collisions through a Glauber approach. ALICE results on particle production in p-Pb collisions at sqrt(s_NN) = 5.02 TeV will be presented, including the pseudo-rapidity and transverse momentum dependence. The centrality determination will be addressed and its implications will be discussed.

Primary author

Dr Chiara Oppedisano (INFN, Torino, Italy)

Presentation Materials