Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modified perturbation theory for angular distribution in W-pair
  production   We examine the capabilities of the modified perturbation theory (MPT) for
description of $W$-pair production and decay in $e^{+} e^{-}$ annihilation. In
a model with Dyson-resummed propagators of unstable particles, we calculate
even and odd contributions to the distribution in the cosine of the $W^{-}$
production angle relative to the $e^{-}$ beam. On comparing the results of
calculations in the NNLO approximation of MPT with the exact results in the
model, a coincidence of outcomes at the ILC energies is detected at the
per-mille level.

28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg