Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Numerical Regge pole analysis of resonance structures in elastic,
  inelastic and reactive state-to-state integral cross sections   We present a detailed description of a FORTRAN code for evaluation of the
resonance contribution a Regge trajectory makes to the integral state-to-state
cross section (ICS) within a specified range of energies. The contribution is
evaluated with the help of the Mulholland formula [Macek et al (2004)] and its
variants [Sokolovski et al (2007); Sokolovski and Akhmatskaya (2011)]. Regge
pole positions and residues are obtained by analytically continuing S-matrix
element, evaluated numerically for the physical values of the total angular
momentum, into the complex angular momentum plane using the PADE II program
[Sokolovski et al (2011)]. The code decomposes an elastic, inelastic, or
reactive ICS into a structured, resonance, and a smooth, "direct", components,
and attributes observed resonance structure to resonance Regge trajectories.
The package has been successfully tested on several models, as well as the F +
H2->HF+H benchmark reaction. Several detailed examples are given in the text.

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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: adap-org
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The categories of this paper are: astro-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: q-fin
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The categories of this paper are: cs
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The categories of this paper are: math-ph