Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the rare $K \to \pi \bar l l$ decays   In this talk, we present our recent work on the $K\ra\pi \bar{l} l$ decays in
a combined framework of chiral perturbation theory and Large--$N_c$ QCD under
the dominance of a minimal narrow resonance structure. The proposed description
reproduces very well the experimental Br$(K^+\ra\pi^+ e^+ e^-)$ and
Br$(K_S\ra\pi^0 e^+ e^-)$. Predictions for the $K\ra\pi \mu^{+}\mu^{-}$ modes
are also obtained and we can conclude to the constructive type for the
interference between the {\it direct} and {\it indirect} CP--violation
amplitudes in $K_L\ra\pi^0 e^+ e^-$.

30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio