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Constraining the invisible neutrino decay with KM3NeT-ORCA
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC). Institut de Física Corpuscular (CSIC–Universitat de València), Spain.
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Number of Authors: 52019 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 789, p. 472-479Article in journal (Refereed) Published
Abstract [en]

Several theories of particle physics beyond the Standard Model consider that neutrinos can decay. In this work we assume that the standard mechanism of neutrino oscillations is altered by the decay of the heaviest neutrino mass state into a sterile neutrino and, depending on the model, a scalar or a Majoron. We study the sensitivity of the forthcoming KM3NeT-ORCA experiment to this scenario and find that it could improve the current bounds coming from oscillation experiments, where three-neutrino oscillations have been considered, by roughly two orders of magnitude. We also study how the presence of this neutrino decay can affect the determination of the atmospheric oscillation parameters sin(2) theta(23) and Delta m(31)(2), as well as the sensitivity to the neutrino mass ordering.

Place, publisher, year, edition, pages
2019. Vol. 789, p. 472-479
Keywords [en]
Neutrino masses and mixing, Neutrino oscillations, Neutrino decay, Neutrino telescopes
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-166725DOI: 10.1016/j.physletb.2018.12.066ISI: 000457165400063OAI: oai:DiVA.org:su-166725DiVA, id: diva2:1297197
Available from: 2019-03-19 Created: 2019-03-19 Last updated: 2019-03-19Bibliographically approved

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de Salas, Pablo FernándezPastor, S.Tórtola, M.
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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