Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Production of $\rho(770)$, $\eta$ pairs in the decays
  $\rho(1450)\rightarrow \rho(770)\eta$, $\tau\rightarrow
  \rho(770)\eta\nu_{\tau}$, and in the process of $e^{+}e^{-} \rightarrow
  \rho(770)\eta$ in the Extended Nambu - Jona-Lasinio model   Production of $\rho(770)$, $\eta$ pairs at colliding of electron-positron
beams and in the decays $\rho(1450)\rightarrow \rho(770)\eta$, $\tau\rightarrow
\rho(770)\eta\nu_{\tau}$ is calculated in the framework of the Nambu -
Jona-Lasinio model. In the process of electron-positron annihilation and the
$\tau$ - lepton decay the contributions of the intermediate $\rho(770)$ vector
meson in the ground and first radially excited state are taken into account.
The theoretical prediction for the decay $\tau\rightarrow
\rho(770)\eta\nu_{\tau}$ is given. The obtained results for other processes are
in satisfactory agreement with the experimental data.

4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg