The pion structure in Minkowski space is described in terms of an analytic model of the Bethe-Salpeter amplitude combined with Euclidean Lattice QCD results for the running quark mass. In the present work, a pion model previously proposed, which allows for a Nakanishi integral representation, is studied in order to verify the sensitivity of the pion electromagnetic form factor to small variations of the quark self-energy. In addition, we extend the previous work, providing the Nakanishi integral representation for the invariants associated with a decomposition of the pion Bethe-Salpeter amplitude.
@article{arxiv.1912.07459,
title = {Pion observables with the Minkowski Space Pion Model},
author = {J. P. B. C. de Melo and Rômulo M. Moita and Tobias Frederico},
journal= {arXiv preprint arXiv:1912.07459},
year = {2019}
}
Comments
Use PoS style. Light Cone 2019 - QCD on the light cone: from hadrons to heavy ions - LC2019 - 16-20 September 2019 -Ecole Polytechnique, Palaiseau, France