Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Soft Physics in Pb-Pb at the LHC   The LHC results on particle and transverse energy production and
Bose-Einstein correlations show that the system produced in Pb-Pb collisions at
psNN = 2:76TeV is significantly larger, lives longer and is hotter and denser
than at RHIC energies. The particle spectra and soft particle correlations
allow a more detailed study of the properties of the produced system and its
initial conditions. This contribution highlights some of the first soft physics
results from the LHC.

26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess