Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fully analytical O(\alpha_s) results for on-shell and off-shell
  polarized W-boson decays into massive quark pairs   We provide analytical $O(\alpha_s)$ results for the three polarized decay
structure functions $H_{++},\,H_{00}$ and $H_{--}$ that describe the decay of a
polarized $W$ boson into massive quark--antiquark pairs. As an application we
consider the decay $t\to b+W^+$ involving the helicity fractions $\rho_{mm}$ of
the $W^+$ boson followed by the polarized decay $\hbox{$W^+(\uparrow)$}\to
q_1\bar{q}_2$ described by the polarized decay structure functions $H_{mm}$. We
thereby determine the $O(\alpha_s)$ polar angle decay distribution of the
cascade decay process $t\to b+W^+(\to q_1\bar{q}_2)$. As a second example we
analyze quark mass and off-shell effects in the cascade decays $H\to
W^{-}+W^{\ast +}(\to q_1\bar{q}_2)$ and $H\to Z+Z^{\ast}(\to q\bar{q})$. For
the decays $H\to W^{-}+W^{\ast +}(\to c\bar b)$ and $H\to Z+Z^{\ast}(\to
b\bar{b})$ we find substantial deviations from the mass-zero approximation in
particular in the vicinity of the threshold region.

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The categories of this paper are: q-fin
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The categories of this paper are: hep-lat
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The categories of this paper are: econ
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The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: stat
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The categories of this paper are: hep-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: alg-geom