Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Simulation of QCD Radiation in Top Quark Decays   In this paper we describe a theoretical framework and algorithms for
implementing QCD corrections to top quark decays in the Herwig++ event
generator. The dominant corrections, due to soft and collinear emissions, are
summed to all orders through the coherent parton branching formalism. In
addition, unenhanced first-order matrix-element corrections are included to
account for large transverse momentum emissions.

13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat