Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of the nature of $\iota/\eta(1440)$ in the chiral perturbation
  theory approach   The nature of $\iota/\eta(1440)$ is analysed in the framework of the
hypothesis that it represents a single pseudoscalar resonance. Assuming that it
arises due to the mixing between the glueball and the $q\bar q$ nearby states
($\eta$, $\eta'$, and their radial excitations) two upper estimates are
obtained for the partial width $\Gamma(\iota/\eta(1440) \to K^* K)$ --- one for
the case when $\iota/\eta(1440)$ is mainly a glueball and another one when it
is mainly a radial excitation of the $s\bar s$ state. Both estimates are
obtained in the chiral perturbation theory approach taking into account the
available data on the vector mesons and the pseudoscalar state K(1460), which
is interpreted as a radial excitation of the $K$ meson. The same partial width
is independently estimated on the basis of the combined OBELIX and Crystal
Barrel data on the production of $\iota/\eta(1440)$ in $p\bar p$ annihilation.
Comparing the results we show that the glueball content of $\iota/\eta(1440)$
is suppressed while its $s\bar s$ radial-excitation interpretation is favoured
by the data.

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The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
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The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph