Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $\phi$ meson production at forward rapidity in Pb-Pb collisions at
  $\sqrt{s_\mathrm{NN}}=2.76$ TeV   $\phi$ meson measurements provide insight into strangeness production, which
is one of the key observables for the hot medium formed in high-energy
heavy-ion collisions. ALICE measured $\phi$ production through its decay in
muon pairs in Pb-Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 2.76 TeV in the
intermediate transverse momentum range $2 < p_{\rm T} < 5$ GeV/$c$ and in the
rapidity interval $2.5<y<4$. The $\phi$ yield was measured as a function of the
transverse momentum and collision centrality. The nuclear modification factor
was obtained as a function of the average number of participating nucleons.
Results were compared with the ones obtained via the kaon decay channel in the
same $p_{\rm T}$ range at midrapidity. The values of the nuclear modification
factor in the two rapidity regions are in agreement within uncertainties.

12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess