Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: \eta(1475) and f_1(1420) resonances in \gamma\gamma* collisions and
  J/\psi\to\gamma(\rho\rho, \gamma\rho^0, \gamma\phi) decays   The available data on the $Q^2$ dependence of the $\gamma\gamma*(Q^2)\to
K\bar K\pi$ reaction cross section in the energy region 1.35-1.55 GeV is
explained by the $\eta(1475)$ resonance production in contrast to their
conventional interpretation with the use of the $f_1(1420)$ resonance. It
resolves theoretically the contradiction between the suppression of the
$\eta(1475)\to\gamma\gamma$ decay width and the strong couplings of the
$\eta(1475)$ to the $\rho\rho$, $\omega\omega$, and $\gamma\rho^0$ channels.
The experimental check of our explanation requires definition of the
spin-parity of the resonance contributions, $R$, in $\gamma\gamma*(Q^2)\to R\to
K\bar K\pi$ and in $J/\psi\to\gammaR\to\gamma\gamma(\rho^0, \phi)$. This will
help to solve difficulties accumulated in understanding properties of the
$\eta(1475)$ state and its nearest partners.

30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ