Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Isospin mixing effects in low-energy $\bar{K}N - \pi \Sigma$ interaction   New strong coupled-channel $\bar{K}N - \pi \Sigma$ potential, reproducing all
existing experimental data and suitable for using in an accurate few-body
calculations, is constructed. Isospin breaking effects of direct inclusion of
the Coulomb interaction and using of physical masses in calculations are
investigated. The $1 s$ level shift and width of kaonic hydrogen, consistent
with the scattering data, was obtained and the corresponding exact strong $K^-
p$ scattering length was calculated. One- and two-pole form of $\Lambda(1405)$
resonance was considered.

24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess