Revisiting the quantum decoherence scenario as an explanation for the LSND anomaly

Abstract

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.

14 pages, 6 figures; version appeared in JHEP

References in corpus (8)

• Updated fit to three neutrino mixing: status of leptonic CP violation
• Improved Measurement of Electron Antineutrino Disappearance at Daya Bay
• Combined analysis of ${\nu }_{\mu }$ disappearance and ${\nu }_{\mu }\to {\nu }_e$ appearance in MINOS using accelerator and atmospheric neutrinos
• Reconciling results of LSND, MiniBooNE and other experiments with soft decoherence
• Quantum decoherence and neutrino data
• Light sterile neutrino sensitivity at the nuSTORM facility
• Statistical tests of sterile neutrinos using cosmology and short-baseline data
• Searching for sterile neutrinos at the ESS$\nu$SB

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