Eta --> 3 pi and quark masses
High Energy Physics - Phenomenology
2013-08-26 v1
Abstract
In recent years, the decay eta --> 3 pi has received considerable attention from experimental and theoretical side. It is of particular theoretical interest because it allows for the determination of (m_u - m_d). In addition, for many years now theory has had difficulties to understand the slope of the neutral channel Dalitz plot distribution, which in contrast is very well measured. I discuss here the relation of the decay to the masses of the light quarks and review a number of theoretical and experimental works that are concerned with these questions.
Keywords
Cite
@article{arxiv.1301.7282,
title = {Eta --> 3 pi and quark masses},
author = {Stefan Lanz},
journal= {arXiv preprint arXiv:1301.7282},
year = {2013}
}
Comments
15 pages, 5 figures, plenary talk presented at The 7th International Workshop on Chiral Dynamics, August 6 -10, 2012, Jefferson Lab, Newport News, Virginia, USA