Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QCD in beauty decays: successes and puzzles   The status of the heavy quark expansion for inclusive B decays is briefly
reviewed from the perspective of confronting theory with data and of extracting
the heavy quark parameters. A good agreement between properly applied theory
and new precision data is observed. Some recent applications to the exclusive
heavy flavor transitions are addressed. I recall the `1/2 > 3/2' paradox for
the transitions into the charm P-wave states.

1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg