New Results on Kaon Decays from NA48
High Energy Physics - Experiment
2019-08-14 v1
Abstract
New measurements of K_L and K_S decays from the NA48 experiment are presented. From data taken in the year 2001, the value of the K_e3 charge asymmetry has been determined to delta_L(e) = (3.317 +- 0.070(stat) +- 0.072 (syst)) x 10^-3. From a special high-intensity K_S run period performed in 2000, NA48 has found a limit of 1.4 x 10^-6 on the K_S -> 3 pi0 branching ratio and measured the parameter eta_000. The same data sample also leads to the first observation of the rare decay K_S -> pi0 gamma gamma. All results are still preliminary.
Cite
@article{arxiv.hep-ex/0305059,
title = {New Results on Kaon Decays from NA48},
author = {Rainer Wanke},
journal= {arXiv preprint arXiv:hep-ex/0305059},
year = {2019}
}
Comments
6 pages, 9 figures, to appear in the proceedings of the 38th Rencontres de Moriond, Electro-Weak Interactions and Unified Theories, Les Arcs, France, March 2003