Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Diquark correlations in baryon spectroscopy and holographic QCD   We introduce an improved mass formula for the nucleon and delta resonances
and show how it emerges from AdS/QCD in a straightforward extension of the
'metric soft wall' gravity dual. The resulting spectrum depends on just one
adjustable parameter, characterizing confinement-induced IR deformations of the
anti-de Sitter (AdS) metric, and on the fraction of 'good' (i.e. maximally
attractive) diquarks in the baryon's quark model wave function. Despite its
simplicity, the predicted spectrum describes the masses of all 48 observed
light-quark baryon states and their linear trajectory structure with
unprecedented accuracy.

20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph