Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Prediction of an exotic state around 4240 MeV with $J^{PC}=1^{-+}$ as
  C-parity partner of Y(4260) in molecular picture   The possibility of the Y(4260) being the molecular state of $D\bar
D_1(2420)+\mathrm{c.c.}$ is investigated in the one boson exchange model. It
turns out that the potential of $J^{PC}=1^{--}$ state formed by $D\bar
D_1(2420)+\mathrm{c.c.}$ is attractive and strong enough to bind them together
when the momentum cutoff $\Lambda \gtrsim 1.4$ GeV. To produce the Y(4260) with
correct binding energy, we need $\Lambda\approx 2.1$ GeV. Besides, $D\bar
D_1(2420)+\mathrm{c.c.}$ can also form a state with exotic quantum numbers,
$J^{PC}=1^{-+}$, and its potential similar with that of the $J^{PC}=1^{--}$
state. Therefore, an exotic state with mass around 4240 MeV (called
$\eta_{c1}(4240)$) is predicted to exist. Our estimation of the mass of the
$J^{PC}=1^{-+}$ state in charmonium region is in agreement with those predicted
by the chiral quark model and the lattice QCD. The possible decay modes and
their relative widths are estimated and the results suggest that this exotic
state can be searched for in $\eta\eta_c$ and $\eta\chi_{c1}$ channels.

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The categories of this paper are: comp-gas
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The categories of this paper are: econ
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The categories of this paper are: plasm-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-th
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: astro-ph