Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analysis of the QCD-improved factorization in B -> J/\psi K   We consider the exclusive decay $B\to J/\psi K$ using the QCD-improved
factorization method in the heavy quark limit. It is shown that the decay
amplitude is factorizable in this limit and nonfactorizable contributions are
calculable from first principles in perturbation theory. Also the spectator
contributions at order $\alpha_s$ are finite and suppressed in the heavy quark
limit. We present the result at next-to-leading order in strong interaction,
and leading order in $1/m_b$ in the heavy quark limit.

14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin