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 - ?.
Abstract
Searches for heavy neutral lepton production in K<sup>+</sup> ? e<sup>+N</sup> and K<sup>+</sup> ? µ<sup>+N</sup> 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<sup>-9</sup> and 10<sup>-8</sup>, respectively, improving on the earlier searches for heavy neutral lepton production and decays in the kinematically accessible mass range. Searches for the K<sup>+</sup> ? µ<sup>+vvv</sup> and K<sup>+</sup> ? µ<sup>+v</sup>X decays, where X is a new light invisible particle, are also reported.
| Item Type: | Conference Item (Unspecified) |
|---|---|
| Depositing User: | Symplectic Admin |
| Date Deposited: | 13 Oct 2022 16:38 |
| Last Modified: | 11 Jun 2025 18:00 |
| DOI: | 10.22323/1.398.0686 |
| Open Access URL: | https://pos.sissa.it/398/686/pdf |
| Related Websites: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3165441 |
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