Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Heavy-flavour production and nuclear modification factor in Pb-Pb
  collisions at $\sqrt{s_{\rm NN}}$=2.76 TeV with ALICE   The measurement of heavy-flavour production and nuclear modification factor
in heavy-ion collisions provides insights into the mechanisms of parton energy
loss in the hot and dense medium formed in these collisions. ALICE results on
heavy-flavour decay electrons and muons and on D mesons are presented.

27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org