The neutral decay modes of the eta meson are reviewed. The most recent results obtained with the Crystal Ball multiphoton detector at BNL are incorporated. This includes a new, precise result for the slope parameter alpha of the Dalitz plot in eta -> 3pi0 decay and a new, lower branching ratio for eta -> pi0 gamma gamma which is consistent with chiral perturbation theory. Recently-obtained limits are given for novel tests of CP and C invariance based on several rare eta decays.
@article{arxiv.nucl-ex/0202008,
title = {The Neutral Decay Modes of the Eta-Meson},
author = {B. M. K. Nefkens and J. W. Price},
journal= {arXiv preprint arXiv:nucl-ex/0202008},
year = {2008}
}
Comments
27 pages, 3 figures; Contribution to the Eta Physics Handbook, Workshop on Eta Physics, Uppsala 2001