Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of nuclear modification factors of (anti-)hadrons and light
  (anti-)nuclei in Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 2.76 TeV   The nuclear modification factors ($R_{AA}$) of $\pi^{\pm}, p(\bar p)$, and
$d(\bar d)$ with $|y|<0.5, p_T<20.0$~GeV/c in peripheral (40-60\%) and central
(0-5\%) Pb-Pb collisions at $\sqrt {s_{NN}}=2.76$ TeV have been studied using
the parton and hadron cascade ({\footnotesize PACIAE}) model plus the
dynamically constrained phase space coalescence ({\footnotesize DCPC}) model.
It is found that the $R_{AA}$ of light (anti)nuclei ($d, \bar d$) is similar to
that of hadrons ($\pi^\pm, p, \bar p$), and the $R_{AA}$ of antiparticles is
the same as that of particles. The suppression of $R_{AA}$ at high-$p_T$
strongly depends on event centrality and mass of the particles, i.e., the
central collision is more suppressed than the peripheral collision. Besides,
the yield ratios and double ratios for different particle species in $pp$ and
Pb-Pb collisions are discussed, respectively. It is observed that the yield
ratios and double ratios of $d$ to $p$ and $p$ to $\pi$ are similar to those of
their anti-particles in three different collision systems, suggesting that the
suppressions of matter ($\pi^{+}, p, d$) and the corresponding antimatter
($\pi^{-},\bar{p},\bar{d}$) are around the same level.

18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
10
The categories of this paper are: q-bio