Preliminary measurement of Gamma(Ke2)/Gamma(Km2) at KLOE
Abstract
A preliminary measurement of RK = Gamma(Ke2)/Gamma(Km2) at the KLOE experiment is discussed. The result, RK = (2.55+-0.05+-0.05)x 10-5, is based on 1.7 fb-1 of luminosity integrated on the phi-meson peak at the Frascati e+e- collider DAFNE, corresponding to ~8000 observed Ke2 events. Perspectives on the methods planned to improve both the statistical and the systematic errors are briefly outlined.
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