Chiral Lagrangians with tensor sources
High Energy Physics - Phenomenology
2011-07-19 v1
Abstract
The implementation of tensor sources in Chiral Lagrangians allows the computation of Green functions and form factors involving tensor currents, that is, quark bilinears of the form \bar{q}_i\sigma^{\mu\nu}q_j. Whereas only four new terms show up at O(p^4), we find around a hundred of them at O(p^6). So it becomes essential to ensure that this set o operators is indeed minimal and non-redundant (i.e., it is a basis). We discuss two phenomenological applications in the context of vector meson resonances and the radiative pion decay.
Cite
@article{arxiv.0709.3157,
title = {Chiral Lagrangians with tensor sources},
author = {Vicent Mateu},
journal= {arXiv preprint arXiv:0709.3157},
year = {2011}
}
Comments
Talk given at the 4th International Worshop on Quantum ChromoDynamics, Theory and experiment, June 16-20, 2007. Martina Franca - Valle d'Itria - Italy