Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: J/Psi and Psi' total cross sections and formation times from data for
  charmonium suppression in $pA$ collisions   The recent data for E866 experiment on the x_F dependence for charmonium
suppression in pA collisions at 800 GeV are analyzed using a time- and
energy-dependent preformed charmonium absorption cross section
\sigma_{abs}^\psi(\tau,\sqrt{s}). For \sqrt{s}=10 GeV the initially (\tau=0)
produced premeson has an absorption cross section of \sigma_{pr}~3mb. At the
same energy but for \tau -> \infty one deduces for the total cross sections
\sigma_{tot}^{J/Psi N}=(2.8\pm 0.3)mb, \sigma_{tot}^{J/Psi N}= (10.5\pm 3.6)mb.
The date are compatible with a formation time \tau_{1/2}=0.6 fm/c.

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The categories of this paper are: econ
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
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The categories of this paper are: math-ph
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph