Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Production of the charmoniumlike state $Y(4220)$ through the $p\bar{p}
  \to Y(4220) \pi^0$ reaction   The $Y(4220)$ production in the process of $p\bar{p} \to Y(4220)\pi^0$ is
studied within the effective Lagrangian approach. We first study the $e^+e^-\to
Y(4220) \to p\bar{p}\pi^0$ reaction at center-of-mass energy $4.258$ GeV with
the assumption that the $Y(4220)$ is a $\psi(4S)$ state. We show that the
inclusion of nucleon and nucleon resonance leads to a quite good description of
the experimental data of $\pi^0 p$ and $\pi^0 \bar{p}$ invariant mass
distributions. Then, the total and angular distributions of the $p\bar{p} \to
Y(4220)\pi^0$ reaction are investigated. It is shown that the nucleon pole is
dominant but the contributions from excited nucleon resonances are
non-negligible. The $p\bar{p} \to Y(4220)\pi^0$ reaction is useful for studying
the property of $Y(4220)$ and our calculated results may be tested at the
forthcoming $\overline{\mbox{P}}$ANDA experiments.

20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
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The categories of this paper are: eess
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph