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arXiv · 0707.4623

Preliminary measurement of Gamma(Ke2)/Gamma(Km2) at KLOE

The KLOE Collaboration
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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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The KLOE Collaboration. 2007-07-31. Preliminary measurement of Gamma(Ke2)/Gamma(Km2) at KLOE. https://arxiv.org/abs/0707.4623

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