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Implications of rare kaon decays on lepton number violating interactions

Deppisch, F; Fridell, K; Harz, J; (2021) Implications of rare kaon decays on lepton number violating interactions. In: (Proceedings) 40th International Conference on High Energy physics - ICHEP2020. The International School for Advanced Studies Green open access

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Abstract

We explore the possibility of lepton number violation (LNV) manifesting in the rare kaon decay K→πνν, its consequences for radiative neutrino mass generation and the washout of lepton asymmetry in high-scale leptogenesis scenarios. We perform the analysis in a model-independent framework, the Standard Model effective field theory (SMEFT). Possibilities to detect the LNV nature of the rare kaon decay are discussed in the context of the currently operating NA62 experiment at CERN and the KOTO experiment at J-PARC. We find that LNV could be detectable, and that any such detection would put high-scale leptogenesis under tension but could account for small radiatively generated neutrino masses.

Type: Proceedings paper
Title: Implications of rare kaon decays on lepton number violating interactions
Event: 40th International Conference on High Energy physics - ICHEP2020
Open access status: An open access version is available from UCL Discovery
DOI: 10.22323/1.390.0130
Publisher version: https://pos.sissa.it/390/130/
Language: English
Additional information: Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. See: https://creativecommons.org/licenses/by-nc-nd/4.0/
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10128357
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