Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $P_c$ Resonances in the Compact Pentaquark Picture   $P_c$ resonances are studied in the approach of quark model and group theory.
It is found that there are totally 17 possible pentaquark states with the quark
contents $q^3Q \bar Q$ ($q$ are $u$ and $d$ quarks; $Q$ is $c$ quark) in the
compact pentaquark picture, where the hidden heavy pentaquark states may take
the color singlet-singlet ($[111]_{{qqq}}\otimes [111]_{{c \bar c}}$) and color
octet-octet ($[21]_{{qqq}}\otimes [21]_{{c \bar c}}$) configurations. The
partial decay widths of hidden heavy pentaquark states are calculated for all
possible decay channels. The results show that the $pJ/\psi$ is the dominant
decay channel for both the spin $3/2$ and $1/2$ pentaquark states, and indicate
that the $P_c(4440)$ may not be a compact pentaquark state while $P_c(4312)$
and $P_c(4457)$ could be the spin-$\frac{1}{2}$ and spin-$\frac{3}{2}$
pentaquark states, respectively.

22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th