Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interference phenomena in the decay $D^+_s\to\eta\pi^0\pi^+$ induced by
  the $a^0_0(980)-f_0(980)$ mixing   Using the data on the decay $D^+_s\to f_0(980)\pi^+\to K^+K^-\pi^+$, we
estimate the amplitude of the process $D^+_s\to\left[f_0(980)\to
(K^+K^-+K^0\bar K^0)\to a^0_0(980)\right]\pi^+\to\eta\pi^0\pi^+$, caused by the
mixing of $a^0_0(980)$ and $f_0(980)$ resonances that breaks the isotopic
invariance due to the $K^+$ and $K^0$ meson mass difference. Effects of the
interference of this amplitude with the amplitudes of the main mechanisms
responsible for the decay $D^+_s \to\eta \pi^0\pi^+$ are analyzed. As such
mechanisms, we examine the transition $D^+_s\to\eta\rho^+\to\eta\pi^0\pi^+$,
which is observed in experiment, and the possible transition
$D^+_s\to\left(a^0_0(980) \pi^++a^+_0(980)\pi^0\right)\to\eta \pi^0\pi^+$. It
is shown that the rapidly varying phase of the $a^0_0(980)-f_0(980)$ transition
amplitude strongly influences on the interference curves.

17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat