Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Progress in the calculation of nucleon transition form factors   We give a brief account of the Dyson-Schwinger and Faddeev-equation approach
and its application to nucleon resonances and their transition form factors. We
compare the three-body with the quark-diquark approach and present a
quark-diquark calculation for the low-lying nucleon resonances including
scalar, axialvector, pseudoscalar and vector diquarks. We also discuss the
timelike structure of transition form factors and highlight the advantages of
form factors over helicity amplitudes.

28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
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The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio