Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Light flavor baryon spectrum with higher order hyperfine interactions   We study the spectrum of light flavor baryons in a quark-model framework by
taking into account the order $\mathrm{O}(\alpha_s^2)$ hyperfine interactions
due to two-gluon exchange between quarks. The calculated spectrum agree better
with the experimental data than the results from hyperfine interactions with
only one-gluon exchange. It is also shown that two-gluon exchange hyperfine
interactions bring a significantly improved correction to the Gell-Mann--Okubo
mass formula. Two-gluon exchange corrections on baryon excitations (including
negative parity baryons) are also briefly discussed.

18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc