Neutral pion photoproduction on protons in fully covariant ChPT with Delta(1232) loop contributions
High Energy Physics - Phenomenology
2015-10-07 v1
Abstract
We study the neutral pion photoproduction at near-threshold energies in fully covariant chiral perturbation theory up to O(p^3). When including only nucleonic virtual states in the model, the convergence is too slow. Therefore we test the model when introducing the Delta(1232) resonance as an additional degree of freedom. Some low-energy constants were fitted, converging to values in good agreement with those expected from literature.
Keywords
Cite
@article{arxiv.1510.01598,
title = {Neutral pion photoproduction on protons in fully covariant ChPT with Delta(1232) loop contributions},
author = {Astrid Hiller Blin and Tim Ledwig and Manuel Vicente Vacas},
journal= {arXiv preprint arXiv:1510.01598},
year = {2015}
}
Comments
Proceedings to the 8th International Workshop on Chiral Dynamic 2015