Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Current status of $\varepsilon'/\varepsilon$ in the Standard Model   A recent lattice prediction of $\varepsilon'/\varepsilon$, with a 2.1
$\sigma$ deviation from the experimental value, has triggered several studies
of possible contributions from physics beyond the Standard Model. We have
recently updated the SM prediction, including all known short-distance and
long-distance contributions, our result
$\mbox{Re}\left(\varepsilon'/\varepsilon\right) = (15 \pm 7)\cdot 10^{-4}$ is
in complete agreement with the experimental measurement. In addition, we
emphasize on the importance of the long-distance re-scattering of the final
pions in $K \to \pi \pi$ for a correct prediction of
$\varepsilon'/\varepsilon$.

24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci