Flavor mixing in a Lee-type model
arXiv:0803.1422 · doi:10.1103/PhysRevD.78.033008
Abstract
An exactly solvable Quantum Field Theory (QFT) model of Lee-type is constructed to study how neutrino flavor eigenstates are created through interactions and how the localization properties of neutrinos follows from the parent particle that decays. The two-particle states formed by the neutrino and the accompanying charged lepton can be calculated exactly as well as their creation probabilities. We can show that the coherent creation of neutrino flavor eigenstates follows from the common negligible contribution of neutrino masses to their creation probabilities. On the other hand, it is shown that it is not possible to associate a well defined "flavor" to mixed states of charged leptons.
v2: 25pp in preprint form, typos corrected and references added, one paragraph around Eq.(90) added in conclusions
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