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On the Treatment of Neutrino Oscillations Without Resort to Weak Eigenstates
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We discuss neutrino oscillations in the framework of the quantum field theory without introducing the concept of neutrino weak eigenstates. The external particles are described by wave packets and the different mass eigenstate neutrinos propagate between the production and detection interactions, which are macroscopically localized in space-time. The time-averaged cross section, which is the measurable quantity in the usual experimental setting, is calculated. It is shown that only in the extremely relativistic limit the usual quantum mechanical oscillation probability can be factored out of the cross section.
Forward citations
Cited by 2 Pith papers
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Real and Virtual Propagation in Neutrino Oscillations
In Gaussian wave-packet QFT, flavor oscillations switch on only after a propagation-time threshold set by the wave-packet energy uncertainty and the intermediate particle's decay width; below it the neutrino is purely...
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Quantum field theory treatment of neutrino flavor oscillations in matter
The virtual-particle QFT formalism with exact matter propagators for Majorana neutrinos reproduces the standard MSW oscillation probability in uniform matter.
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