Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The $ss \bar s \bar s$ tetraquark states and the newly observed
  structure $X(2239)$ by BESIII Collaboration   We investigate the mass spectrum of the $ss \bar s \bar s$ tetraquark states
within the relativized quark model. By solving the Schr\"{o}dinger-like
equation with the relativized potential, the masses of the $S-$ and $P-$wave
$ss \bar s \bar s$ tetraquarks are obtained. The screening effects are also
taken into account. It is found that the observed resonant structure $X(2239)$
in the $e^+e^- \to K^+K^-$ process by BESIII Collaboration can be assigned as a
$P-$wave $1^{--}$ $ss \bar s \bar s$ tetraquark state. Furthermore, the
radiative transition and strong decay behaviors of this structure are also
estimated, which can provide helpful information for future experimental
searches.

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The categories of this paper are: acc-phys
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
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The categories of this paper are: funct-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: gr-qc
2
The categories of this paper are: math
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The categories of this paper are: supr-con
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
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The categories of this paper are: solv-int