Speaker
Dr
Alberica Toia
(Universita e INFN (IT))
Description
Measurements of particle production in proton-nucleus collisions
provide a reference to disentangle final state effects,
i.e. signatures of the formation of a deconfined hot medium, from
initial state effects, already present in cold nuclear matter.
Since many initial state effects are expected to vary as a function of
the number of collisions suffered by the incoming projectile, it is
crucial to estimate event-by-event the centrality of the collision.
In p-Pb collisions, the low particle multiplicities and the large
multiplicity fluctuations influence the way collisions are categorized
into different centrality classes using a particle multiplicity
distribution.
We present ALICE measurements of particle production in p-Pb
collisions at sqrt(s_NN)=5.02 TeV, including the pseudo-rapidity and
transverse momentum dependence, we discuss the event classification in
centrality classes and its implications for the measurements of
nuclear modification factors.
Author
Dr
Alberica Toia
(Universita e INFN (IT))
