A preliminary measurement of R = F (K± → e ±ν̄e)/ F (K± → μ±ν̄μ) at the KLOE experiment is discussed. The result, R = (2.55 ± 0.05 ± 0.05) × 10-5, is based on 1.7 fb-1 of luminosity integrated on the φ-meson peak at the Frascati e +e- collider DAPdblNE, corresponding to ∼8000 observed K± → e± ̄ νe events. Perspectives on the methods planned to improve both the statistical and the systematic errors are briefly outlined.
Preliminary measurement of F (K± → e ±ν̄e)/ F (K± → μ±ν̄μ) at KLOE
Martini M;Meola S;
2007-01-01
Abstract
A preliminary measurement of R = F (K± → e ±ν̄e)/ F (K± → μ±ν̄μ) at the KLOE experiment is discussed. The result, R = (2.55 ± 0.05 ± 0.05) × 10-5, is based on 1.7 fb-1 of luminosity integrated on the φ-meson peak at the Frascati e +e- collider DAPdblNE, corresponding to ∼8000 observed K± → e± ̄ νe events. Perspectives on the methods planned to improve both the statistical and the systematic errors are briefly outlined.File in questo prodotto:
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