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Revisiting the quantum decoherence scenario as an explanation for the LSND anomaly
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Number of Authors: 3
2015 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 5, 007Article in journal (Refereed) Published
Abstract [en]

We propose an explanation for the LSND anomaly based on quantum decoherence, postulating an exponential behavior for the decoherence parameters as a function of the neutrino energy. Within this ansatz decoherence effects are suppressed for neutrino energies above 200 MeV as well as around and below few MeV, restricting deviations from standard three-flavour oscillations only to the LSND energy range of 20-50 MeV. The scenario is consistent with the global data on neutrino oscillations, alleviates the tension between LSND and KARMEN, and predicts a null-result for MiniBooNE. No sterile neutrinos are introduced, conflict with cosmology is avoided, and no tension between short-baseline appearance and disappearance data arises. The proposal can be tested at planned reactor experiments with baselines of around 50 km, such as JUNO or RENO-50.

Place, publisher, year, edition, pages
2015. no 5, 007
Keyword [en]
Beyond Standard Model, Neutrino Physics
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-117779DOI: 10.1007/JHEP05(2015)007ISI: 000354218900001OAI: oai:DiVA.org:su-117779DiVA: diva2:817540
Available from: 2015-06-05 Created: 2015-06-01 Last updated: 2017-12-04Bibliographically approved

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Schwetz, Thomas
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