New results from KLOE
Abstract
The most precise determination of Vus comes from semileptonic kaon decays. We have measured with the KLOE detector at DAFNE, the Frascati phi-factory, all the experimental inputs to Vus for both neutral and charged kaons. Using our results we extract the value of Vus with ~0.9% fractional error, which is dominated by the theoretical error on the form factor, f+(0). A new determination of the ratio Vus/Vud is also presented, based on our precise measurement of the absolute branching ratio for the decay K -> mu nu (gamma), combined with lattice results for the ratio f_K/f_pi. New results on CPT symmetry and quantum mechanics test have also been achieved, which are based on the first measurement of the charged asymmetry for KS -> pi e nu decay and on interferometry studies using the phi -> KL KS -> pi+ pi- pi+ pi-.
Keywords
Cite
@article{arxiv.hep-ex/0701008,
title = {New results from KLOE},
author = {KLOE Collaboration},
journal= {arXiv preprint arXiv:hep-ex/0701008},
year = {2012}
}
Comments
Contributed to Heavy Quarks and Leptons '06 (HQL06), 16-20 Oct 2006 Munich, Germany. 12 pages 4 figures