The authors examine extraction of lepton mixing matrix elements from spectral data in neutrino oscillation experiments including matter effects and test unitarity via a vanishing quantity in a four-generation model.
CP and T Violation in Neutrino Oscillations and Invariance of Jarlskog's Determinant to Matter Effects
2 Pith papers cite this work. Polarity classification is still indexing.
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abstract
Terrestrial matter effects in neutrino propagation are T-invariant, so that any observed T violation when neutrinos pass through the Earth, such as an asymmetry between the transition probabilities P(nu_mu -> nu_e) and P(nu_e -> nu_mu), would be a direct indication of T violation at the fundamental level. Matter effects do however modify the magnitudes of T-violating asymmetries, and it has long been known that resonant enhancement can lead to large effects for a range of plausible values of the relevant parameters. We note that the determinant of the commutator of the lepton mass matrices is invariant under matter effects and use this fact to derive a new expression for the T-violating asymmetries of neutrinos propagating through matter. We give some examples which could have physical relevance.
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hep-ph 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
Torsion-induced four-fermion interactions modify effective masses and mixing parameters for Majorana neutrinos with sterile partners in matter.
citing papers explorer
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Impact of matter effects on the unitarity test of lepton mixing
The authors examine extraction of lepton mixing matrix elements from spectral data in neutrino oscillation experiments including matter effects and test unitarity via a vanishing quantity in a four-generation model.
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Torsional four-fermion interaction for Majorana neutrinos
Torsion-induced four-fermion interactions modify effective masses and mixing parameters for Majorana neutrinos with sterile partners in matter.