Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Partial wave analysis of the Dirac fermions scattered from Reissner -
  Nordstr\" om charged black holes   The asymptotic form of Dirac spinors in the field of the Reissner-Nordstrom
black hole are derived for the scattering states (with $E>mc^2$) obtaining the
phase shifts of the partial wave analysis of Dirac fermions scattered from
charged black holes. The elastic scattering and absorption are studied giving
analytic formulas for the partial amplitudes and cross sections. A graphical
study is performed for analysing the differential cross section
(forward/backward scattering) and the polarization degree as functions of
scattering angle.

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The categories of this paper are: eess
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
3
The categories of this paper are: physics
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The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
2
The categories of this paper are: math
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The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
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The categories of this paper are: q-fin