| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1844884 | Nuclear Physics B - Proceedings Supplements | 2011 | 6 Pages |
Abstract
A precision test of lepton universality by measurement of the ratio RK of K+→e+ν to K+→μ+ν decay rates was performed using a sample of 59963 K+→e+ν candidates with 8.8% background contamination collected by the CERN NA62 experiment. The result RK=(2.486±0.013)×10−5 is in agreement with the Standard Model expectation.
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