First search for K+→π+ν ̄ν using the decay-in-flight technique
(2019) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 791, p. 156-166 (2019)
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- Abstract
- (en) The NA62 experiment at the CERN SPS reports the first search for K + → π+νν¯ using the decay-in-flight technique, based on a sample of 1.21 × 1011 K + decays collected in 2016. The single event sensitivity is 3.15 × 10−10, corresponding to 0.267 Standard Model events. One signal candidate is observed while the expected background is 0.152 events. This leads to an upper limit of 14 × 10−10 on the K + → π+νν¯ branching ratio at 95% CL.
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Citations
Cortina Gil, E., Minucci, E., Lurkin, N., & et al. (2019). First search for K+→π+ν ̄ν using the decay-in-flight technique. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 791, 156-166. https://doi.org/10.1016/j.physletb.2019.01.067 (Original work published 2019)