Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: ALICE probes of local parity violation with charge dependent azimuthal
  correlations in Pb-Pb collisions   We report on the measurement of two and three particle azimuthal correlations
in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV recorded with ALICE at the LHC.
While two particle azimuthal correlations mainly provide an important
information on possible background correlations, the three particle correlator
probes the charge separation of hadrons with respect to the collision reaction
plane which is expected for local parity violation in strong interactions. The
two and three particle correlations are presented as a function of collision
centrality and differentially vs. pseudorapidity and transverse momentum, and
provide strong constraints on the possible mechanism of background (parity
conserving) and signal (parity odd) effects in heavy-ion collisions.

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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: cs
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: econ
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys