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Abstract
A precision test of lepton flavour universality has been performed by measuring the ratio RKRK of kaon leptonic decay rates K+→e+νK+→e+ν and K+→μ+νK+→μ+ν in a sample of 59 813 reconstructed K+→e+νK+→e+ν candidates with (8.71±0.24)%(8.71±0.24)% background contamination. The result RK=(2.487±0.013)×10−5RK=(2.487±0.013)×10−5 is in agreement with the Standard Model expectation.
Original language | English |
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Pages (from-to) | 105-114 |
Journal | Physics Letters B |
Volume | B698 |
Issue number | 2 |
DOIs | |
Publication status | Published - 4 Apr 2011 |
Keywords
- Lepton universality
- Leptonic kaon decay
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Dive into the research topics of 'Test of Lepton Flavour Universality in K+−>l+ν Decays'. Together they form a unique fingerprint.Projects
- 1 Finished
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Responsive RA submission for a "New measurement of the ratio Gamma(K->e nu)/Gamma(K->mu nu) at NA48/2"
Lazzeroni, C. (Principal Investigator) & Watkins, P. (Co-Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/04/08 → 31/03/11
Project: Research Councils