Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Influence of hadronic bound states above $T_c$ on heavy-quark
  observables in Pb+Pb collisions at at the CERN Large Hadron Collider   We investigate how the possible existence of hadronic bound states above the
deconfinement transition temperature $T_c$ affects heavy-quark observables like
the nuclear modification factor, the elliptic flow and azimuthal correlations.
Lattice QCD calculations suggest that above $T_c$ the effective degrees of
freedom might not be exclusively partonic but that a certain fraction of
hadronic degrees of freedom might already form at higher temperatures. This is
an interesting questions by itself but also has a strong influence on other
probes of the strongly interacting matter produced in ultrarelativistic
heavy-ion collisions. A substantial fraction of hadronic bound states above
$T_c$ reduces on average the interaction of the heavy quarks with colored
constituents of the medium. We find that all studied observables are highly
sensitive to the active degrees of freedom in the quark-gluon plasma.

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The categories of this paper are: cs
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
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The categories of this paper are: math
23
The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci