Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Longitudinal top quark polarization   Longitudinal polarization of the top quark, averaged over the production
angle, is discussed for the top quark produced in e+e- annihilation near its
production threshold. It is demonstrated that Coulomb type corrections and
rescattering corrections are important. They change considerably measurable
quantities and should be taken into account in phenomenological analysis.

27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math