Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of beauty-strange meson production in Pb$-$Pb collisions at
  $\sqrt{s_{\rm NN}} = 5.02$ TeV via non-prompt $\mathrm{D_s}^{+}$ mesons   The production yields of non-prompt $\mathrm{D_s}^{+}$ mesons, namely
$\mathrm{D_s}^{+}$ mesons from beauty-hadron decays, were measured for the
first time as a function of the transverse momentum ($p_{\rm T}$) at
midrapidity ($|y|<0.5$) in central and semi-central Pb$-$Pb collisions at a
centre-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}}=5.02$ TeV with the
ALICE experiment at the LHC. The $\mathrm{D_s}^{+}$ mesons and their charge
conjugates were reconstructed from the hadronic decay channel $\mathrm{D_s}^{+}
\to \phi\pi^+$, with $\phi \to {\rm K}^-{\rm K}^+$, in the $4 < p_{\rm T}<36$
GeV/$c$ and $2 < p_{\rm T}<24$ GeV/$c$ intervals for the 0$-$10% and 30$-$50%
centrality classes, respectively. The measured yields of non-prompt
$\mathrm{D_s}^{+}$ mesons are compared to those of prompt $\mathrm{D_s}^{+}$
and non-prompt $\mathrm{D^0}$ mesons by calculating the ratios of the
production yields in Pb$-$Pb collisions and the nuclear modification factor
$R_\mathrm{AA}$. The ratio between the $R_\mathrm{AA}$ of non-prompt
$\mathrm{D_s}^{+}$ and prompt $\mathrm{D_s}^{+}$ mesons, and that between the
$R_\mathrm{AA}$ of non-prompt $\mathrm{D_s}^{+}$ and non-prompt $\mathrm{D^0}$
mesons in central Pb$-$Pb collisions are found to be on average higher than
unity in the $4< p_{\rm T}<12$ GeV/$c$ interval with a statistical significance
of about $1.6\,\sigma$ and $1.7\,\sigma$, respectively. The measured
$R_\mathrm{AA}$ ratios are compared with the predictions of theoretical models
of heavy-quark transport in a hydrodynamically expanding QGP that incorporate
hadronisation via quark recombination.

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The categories of this paper are: physics
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: eess
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The categories of this paper are: math
28
The categories of this paper are: alg-geom
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an