Search for heavy neutral lepton production at the NA62 experiment



Parkinson, Chris John
(2022) Search for heavy neutral lepton production at the NA62 experiment. In: The European Physical Society Conference on High Energy Physics, 2021-7-26 - ?.

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Abstract

Searches for heavy neutral lepton production in K+ ? e+N and K+ ? µ+N decays using the data set collected by the NA62 experiment at CERN in 2016-18 are presented. Upper limits on the elements of the extended neutrino mixing matrix and are established at the levels of 10-9 and 10-8, respectively, improving on the earlier searches for heavy neutral lepton production and decays in the kinematically accessible mass range. Searches for the K+ ? µ+vvv and K+ ? µ+vX decays, where X is a new light invisible particle, are also reported.

Item Type: Conference or Workshop Item (Unspecified)
Depositing User: Symplectic Admin
Date Deposited: 13 Oct 2022 16:38
Last Modified: 17 Mar 2024 13:57
DOI: 10.22323/1.398.0686
Open Access URL: https://pos.sissa.it/398/686/pdf
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3165441