Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraints on string percolation model from anomalous centrality
  evolution data in Au-Au collisions at $\mathbf{\sqrt{s_{NN}}=}$ 62 and 200
  GeV   Anomalous centrality evolution of two-particle angular correlations observed
in Au-Au collisions at $\sqrt{s_{NN}} = 62$ and 200 GeV and the onset of ridge
structures are considered in the model of interacting quark-gluon strings. We
assume that at the given energy of nucleus-nucleus collisions the critical
energy density may be reached at the specific centrality. In a string
percolation model this might be treated equivalently to a formation of a large
cluster of strings characterized by the critical string density, with a size
comparable to the whole area of interaction of two nuclei. This hypothesis
allows to define some constraints on the string percolation model using data on
transitional centralities in Au-Au collisions at these two energies. Results
are extrapolated to the LHC energy where high string densities (exceeding the
critical value) are confirmed for all classes of centralities in Pb-Pb
collisions.
  Interaction between strings inside large clusters formed in nucleus-nucleus
collisions is considered in a simplified Monte Carlo model. This model is
applied to the qualitative analysis of the onset of collectivity and the ridge
formation in Pb-Pb collisions. It is shown that the approach of the repulsive
string-string interaction is capable to explain the appearance of elliptic and
triangular flow observed in nucleus-nucleus collisions at RHIC and LHC
energies.

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The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
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The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
1
The categories of this paper are: cs