Construction of the eta->3pi (and K->3pi) amplitudes using dispersive approach
High Energy Physics - Phenomenology
2012-01-23 v1
Abstract
The dispersive approach based only on very general principles, unitarity, analyticity and crossing symmetry, combined with chiral counting enables to construct fully relativistic model-independent representations of the eta and K three-pion decays valid up to and including two-loop corrections. Here we demonstrate the procedure on the eta->3pi^0 decay. We perform possible matchings of our dispersive approach with the two-loop ChPT result and briefly discuss corresponding predictions of the Dalitz plot slope parameter alpha.
Keywords
Cite
@article{arxiv.0910.1721,
title = {Construction of the eta->3pi (and K->3pi) amplitudes using dispersive approach},
author = {M. Zdrahal and K. Kampf and M. Knecht and J. Novotny},
journal= {arXiv preprint arXiv:0910.1721},
year = {2012}
}
Comments
To appear in the proceedings of "6th International Workshop on Chiral Dynamics", CD09, July 2009, Bern, Switzerland. 6 pages. PoS style