Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: J/psi production in pp and Pb-Pb with ALICE at the LHC   ALICE is the Large Hadron Collider (LHC) experiment dedicated to the study of
heavy ion collisions. The main purpose of ALICE is to investigate the
properties of a new state of deconfined nuclear matter, the Quark Gluon Plasma
(QGP). Quarkonium measurements will play a crucial role in this investigation
due to the interplay of several competing mechanisms that are predicted to
modify its production in the presence of a QGP. During the 2010 and 2011 LHC
campaigns, ALICE took pp data at sqrt(s)=2.76 and 7 TeV and Pb-Pb data at
sqrt(s_nn)=2.76 TeV. We present the latest results of J/psi production under
these conditions, measured by the ALICE experiment at both mid- and
forward-rapidities.

23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an