Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Decoupling theorem in top productions/decays revisited -- To what extent
  can we understand it visually?   I revisit here the decoupling theorem in top-quark productions/decays, which
states that the angular distribution of any final-particle produced in those
processes does not depend on any possible nonstandard top-quark decay
interactions at their leading order when certain conditions are satisfied.
Towards a simple, intuitive and visual understanding of this theorem, I will
study to what extent we could explain why such a theorem holds without relying
on any specific/detailed calculations.

31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ