Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of N*(1440) from J/Psi Decays   For $J/\Psi\to\bar pp \pi^0$ and $\bar pp\pi^+\pi^-$, the $\pi^0p$ and
$p\pi^+\pi^-$ systems are limited to be pure isospin 1/2 due to isospin
conservation. This is a big advantage in studying $N^*$ resonances from
$J/\Psi$ decays, compared with $\pi N$ and $\gamma N$ experiments. The process
$J/\Psi\to\bar pN^*$ or $p\bar N^*$ provides a new way to probe the internal
structure of the $N^*$ resonances. Here we report a quark model calculation for
$J/\Psi\to\bar pp$, $pN^*(1440)$ and $\bar N^*N^*$. The implication for the
internal structure of $N^*(1440)$ is discussed.

33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas