Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Revisiting hidden-charm pentaquarks from QCD sum rules   We revisit the hidden-charm pentaquark states $P_c(4380)$ and $P_c(4450)$
using the method of QCD sum rules by requiring the pole contribution to be
larger than or around 30\% to better insure the one-pole parametrization to be
valid. We find two mixing currents and our results suggest that the $P_c(4380)$
and $P_c(4450)$ can be identified as hidden-charm pentaquark states having
$J^P=3/2^-$ and $5/2^+$, respectively, while there still exist other possible
spin-parity assignments, such as $J^P=3/2^+$ and $J^P=5/2^-$, which needs to be
clarified in further theoretical and experimental studies.

11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph