Pion electromagnetic formfactor in the instanton vacuum
High Energy Physics - Phenomenology
2014-11-17 v1
Abstract
We have calculated the 3-point correlation function for the electromagnetic interaction of the pion in an ensembles of instantons and anti-instantons, modelling the QCD vacuum. The results are well described by a pion pole and the pion formfactor is extracted, nicely following a standard monopole fit. The experimental data on the formfactor are well reproduced, provided an average instanton size is fixed at , the same as found for a variety of other correlation functions and was found on the lattice.
Keywords
Cite
@article{arxiv.hep-ph/9606355,
title = {Pion electromagnetic formfactor in the instanton vacuum},
author = {Andree Blotz and Edward Shuryak},
journal= {arXiv preprint arXiv:hep-ph/9606355},
year = {2014}
}
Comments
35 pages, latex, revtex, epsfig, 8 color figures, 2 tables