Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $\Delta S = 2$ decays of $B^-$ meson in MSSM and two Higgs doublet model   In view of the extreme smallness of $\Delta S = 2$ transitions of $B$ meson
in the Standard Model, we consider their occurence in several extensions of it.
Thus, we analyze the three - body $B^- \to K^- K^- \pi^+$ and two - body $B^-
\to K^{*-} \barK^{*0}$, $B^- \to K^- \bar K^{0}$, $B^- \to K^{*-} \bar K^{0}$,
$B^- \to K^{-} \bar K^{*0}$ decay modes both in the Standard Model and in the
Minimal Supersymmetric Model with and without ${\cal R}$ parity conservation
and in two Higgs doublet models. All five modes are found to have a branching
ratio of the order of $10^{-13}$ in the Standard Model, while the expected
branching ratio in the different extensions vary between $10^{-9} - 10^{-6}$,
for a given reasonable choice of parameters.

22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin