Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charm- and Bottom-Quark Production in Au$+$Au Collisions at
  $\sqrt{s_{_{NN}}}$ = 200 GeV   The invariant yield of electrons from open-heavy-flavor decays for $1<p_T<8$
GeV/$c$ at midrapidity $|y|<0.35$ in Au$+$Au collisions at $\sqrt{s_{_{NN}}}$ =
200 GeV has been measured by the PHENIX experiment at the Relativistic Heavy
Ion Collider. A displaced-vertex analysis with the PHENIX silicon-vertex
detector enables extraction of the fraction of charm and bottom hadron decays
and unfolding of the invariant yield of parent charm and bottom hadrons. The
nuclear-modification factors $R_{AA}$ for electrons from charm and bottom
hadron decays and heavy-flavor hadrons show both a centrality and a quark-mass
dependence, indicating suppression in the quark-gluon plasma produced in these
collisions that is medium sized and quark-mass dependent.

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The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph