Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: S-wave and P-wave non-strange baryons in the potential model of QCD   In this paper, we study the nucleon energy spectrum in the ground-state (with
orbital momentum L=0) and the first excited state (L=1). The aim of this study
is to find the mass and mixing angles of excited nucleons using a potential
model describing QCD. This potential is of the "Coulombian + linear" type and
we take into account some relativistic effects, namely we use essentially a
relativistic kinematic necessary for studying light flavors. By this model, we
found the proton and $\Delta (1232)$ masses respectively equal to ($968MeV$,
$1168MeV$), and the masses of the excited states are between $1564MeV$ and
$1607MeV$.

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The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
1
The categories of this paper are: cs
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin
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The categories of this paper are: eess