Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Statistical Behavior of Lepton Pair Spectrum in Drell-Yan Process and
  Signal from Quark-Gluon Plasma in High Energy Collisions   We analyze the transverse momentum ($p_{T}$) spectra of lepton pairs
($\ell\bar \ell$) generated in the Drell-Yan process, as detected in
proton-nucleus (pion-nucleus) and proton-(anti)proton collisions by ten
collaborations over a center-of-mass energy ($\sqrt{s_{NN}}$ or $\sqrt{s}$ if
in a simplified form) range from $\sim20$ GeV to above 10 TeV. Three types of
probability density functions (the convolution of two L\'{e}vy-Tsallis
functions, the two-component Erlang distribution, and the convolution of two
Hagedorn functions) are utilized to fit and analyze the $p_{T}$ spectra. The
fit results are approximately in agreement with the collected experimental
data. Consecutively, we obtained the variation law of related parameters as a
function of $\sqrt{s}$ and invariant mass ($Q$). In the fit procedure, a given
L\'{e}vy-Tsallis (or Hagedorn) function can be regarded as the probability
density function of transverse momenta contributed by a single quark ($q$) or
anti-quark ($\bar q$). The Drell-Yan process is then described by the
statistical method.

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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-th
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The categories of this paper are: chem-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: mtrl-th
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The categories of this paper are: cs
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The categories of this paper are: eess
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The categories of this paper are: cmp-lg
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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: nlin