Wave-packet treatment of neutrino oscillations and its implications on determining the neutrino mass hierarchy

Abstract

We derive the neutrino flavor transition probabilities with the neutrino treated as a wave packet. The decoherence and dispersion effects from the wave-packet treatment show up as damping and phase-shifting of the plane-wave neutrino oscillation patterns. If the energy uncertainty in the initial neutrino wave packet is larger than around 0.01 of the neutrino energy, the decoherence and dispersion effects would degrade the sensitivity of reactor neutrino experiments to mass hierarchy measurement to lower than 3 $\sigma$ confidence level.

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• Neutrino Decoherence and the Mass Hierarchy in the JUNO Experiment
• Neutrino Decoherence from Generalised Uncertainty
• Studying the neutrino wave-packet effects at medium-baseline reactor neutrino oscillation experiments and the potential benefits of an extra detector
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• Probing new physics scenarios using high energy events at NOvA far detector