First search for <i>K</i><SUP>+</SUP> → π<SUP>+</SUP> ν(ν)over-bar using the decay-in-flight technique



Gil, E Cortina, Minucci, E, Padolski, S, Petrov, P, Velghe, B, Georgiev, G, Kozhuharov, V, Litov, L, Numao, T, Bryman, D
et al (show 179 more authors) (2019) First search for <i>K</i><SUP>+</SUP> → π<SUP>+</SUP> ν(ν)over-bar using the decay-in-flight technique. PHYSICS LETTERS B, 791. pp. 156-166.

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Abstract

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.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 07 May 2019 09:02
Last Modified: 13 Oct 2023 06:04
DOI: 10.1016/j.physletb.2019.01.067
Open Access URL: https://doi.org/10.1016/j.physletb.2019.01.067
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3040008