Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pion electromagnetic form factor with Minkowskian dynamics   The pion electromagnetic form factor has been calculated for the first time
from the solutions of the Bethe-Salpeter equation, obtained directly in
Minkowski space by using the Nakanishi integral representation of the
Bethe-Salpeter amplitude. The one-gluon exchange kernel contains as inputs the
quark and gluon masses, as well as a scale parameter featuring the extended
quark-gluon vertex. The range of variability of these parameters is suggested
by lattice calculations. After presenting a very successful comparison with the
existing data in the whole range of the momentum transfer, we show how
inserting the light-front (LF) formalism in our approach allows to achieve
further interesting results, like the evaluation of the LF valence form factor
and a first investigation of the end-points effects.

23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg