Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of electrons from heavy-flavour decays in Pb-Pb collisions
  at $\sqrt{s_{NN}} = 2.76$ TeV with ALICE   The measurement of heavy-flavour (charm and beauty) production in
ultra-relativistic heavy-ion collisions provides an important contribution to
the study of the properties of the hot and dense medium created in such
collisions. One approach to measure heavy-flavour production is via electrons
from semi-leptonic decays of heavy-flavour hadrons. In this contribution we
present the nuclear modification factor $(R_{{\rm{AA}}})$ and the azimuthal
anisotropy $(v_{2})$ of heavy-flavour decay electrons in Pb-Pb collisions at
$\sqrt{s_\mathit{{\rm{NN}}}}= 2.76$ TeV, which are sensitive to the interaction
of c and b quarks with the medium. We also present, for the first time, the
azimuthal angular correlations of heavy-flavour decay electrons and charged
hadrons, $\Delta\phi(\mathit{HFE},h)$, in Pb-Pb collisions and the
corresponding near-side yield ratio $(I_{\rm{AA}})$.

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The categories of this paper are: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
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The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
2
The categories of this paper are: math
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The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: q-alg
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The categories of this paper are: solv-int
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat