Measurement of the charged kaon lifetime with the KLOE detector
arXiv:0712.1112 · doi:10.1088/1126-6708/2008/01/073
Abstract
We have measured the charged kaon lifetime using a sample of 15 \times 10^6 tagged kaon decays. Charged kaons were produced in pairs at the DA\PhiNE Ï-factory, e^+e^- \to Ï\to K^+ K^-. The decay of a K^+ was tagged by the production of a K^- and viceversa. The lifetime was obtained, for both charges, from independent measurements of the decay time and decay lenght distributions. From fits to the four distributions we find Ï= (12.347\pm0.030) ns.
13 pages, 14 figures