Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $B^- \to K^- \chi_{c0}$ decay from charmed meson rescattering   We study the process $B^- \to K^- \chi_{c0}$ considering intermediate charmed
meson rescattering effects. For this decay mode the naive factorization ansatz
would predict a vanishing amplitude. We estimate contributions from the
$D^{(*)}_{s} D^{(*)}\to K^- \chi_{c0}$ rescattering amplitudes, and compare the
result with recent experimental measurements. We find that rescattering effects
are able to produce a large branching ratio consistent with measurements by
Belle Collaboration. We also consider rescattering effects in $B^- \to K^-
J/\psi$, arguing that they play a similar role in producing a large branching
fraction for this colour-suppressed decay mode.

30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex