Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Production of $Y(4260)$ as a hadronic molecule state of $\bar{D}D_1
  +c.c.$ in $e^+e^-$ annihilations   We study the $Y(4260)$ production mechanism in $e^+e^-$ annihilations in the
framework of hadronic molecules and investigate the consequence of such a
picture in different decay channels. In the hadronic molecule picture the
$Y(4260)$ is described as a mixture state composed of a long-ranged
$\bar{D}D_1(2420)+c.c.$ molecule state and a compact $c\bar{c}$ component. We
show that the compositeness relation can still provide a reasonable constraint
on the wavefunction renormalization parameter due to the dominance of the
molecular component. Such a mechanism can be regarded as a natural consequence
of the heavy quark spin symmetry (HQSS) breaking. This study elaborates the
molecular picture for the $Y(4260)$ in the $e^+e^-$ annihilations and affirms
that the cross section lineshape of $e^+e^-\to \bar{D}D^*\pi+c.c.$ in the
vicinity of the $Y(4260)$ should have a nontrivial behavior. In this framework
we predict that the upper limit of the $Y(4260)$ leptonic decay width is about
500 eV. We also investigate the coupling for $D_1(2420)\to D^*\pi$ in the
$^3P_0$ quark model and examine the possible HQSS breaking effects due to the
deviation from the $|^1P_1\rangle$ and $|^3P_1\rangle$ ideal mixing. This will
in turn provide a constraint on the HQSS breaking coupling for the $Y(4260)$ to
$\bar{D}D_1(2420)+c.c.$ via its $c\bar{c}$ component.

31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
36
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: comp-gas
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph