Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CP violation in non-leptonic $B_c$ decays to excited final states   We study the CP violation in two-body nonleptonic decays of $B_c$ meson. We
concentrate on the decay channels which contain at least one excited heavy
meson in the final states. Specifically, the following channels are considered:
$B_c\to c\bar c(2S, 2P)+\bar cq(1S, 1P)$, $B_c\to c\bar c(1S)+\bar cq(2S, 2P)$,
$B_c\to c\bar c(1P)+\bar cq(2S)$, $B_c\to c\bar c(1D)+\bar cq(1S, 1P)$, and
$B_c\to c\bar c(3S)+\bar cq(1S)$. The improved Bethe-Salpeter method is applied
to calculate the hadronic transition matrix element. Our results show that some
decay modes have large branching ratios, which is of the order of $10^{-3}$.
The CP violation effect in $B_c \rightarrow \eta_c(1S)+D(2S)$, $B_c \rightarrow
\eta_c(1S)+D_0^{*}(2P)$, and $B_c \rightarrow J/\psi+D^{*}(2S)$ are most likely
to be found. If the detection precision of the CP asymmetry in such channels
can reach the $3\sigma$ level, at least $10^7$ $B_c$ events are needed.

11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg