Preliminary measurement of Gamma(Ke2)/Gamma(Km2) at KLOE
The KLOE Collaboration
TL;DR
This paper reports a preliminary measurement of the ratio of decay widths Gamma(Ke2) to Gamma(Km2) at KLOE, based on 1.7 fb^-1 of data, with plans to improve accuracy.
Contribution
It presents the first measurement of RK at KLOE using a large dataset and discusses future improvements in measurement precision.
Findings
Measured RK = (2.55±0.05±0.05)×10^-5
Based on ~8000 Ke2 events
Uses data from the DAFNE collider
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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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Particle Detector Development and Performance