Matter Effect on Neutrino Oscillations from the violation of Universality in Neutrino Neutral Current Interactions

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dc.creatorHonda, Minako
dc.creatorOkamura, Naotoshi
dc.creatorTakeuchi, Tatsu
dc.date2006-03-31
dc.date.accessioned2026-07-07T07:06:12Z
dc.date.available2026-07-07T07:06:12Z
dc.descriptionThe violation of lepton-flavor-universality in the neutrino-Z interactions can lead to extra matter effects on neutrino oscillations at high energies, beyond that due to the usual charged-current interaction of the electron-neutrino. We show that the dominant effect of the violation is a shift in the effective value of θ_{23}. This is in contrast to the dominant effect of the charged-current interaction which shifts θ_{12} and θ_{13}. The shift in θ_{23} will be difficult to observe if the value of \sin^2(2θ_{23}) is too close to one. However, if the value of \sin^2(2θ_{23}) is as small as 0.92, then a Fermilab -> Hyper-Kamiokande experiment can potentially place a constraint on universality violation at the 1% level after 5 years of data taking.
dc.description47 pages REVTeX4, 16 eps figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0603268
dc.identifierhttp://arxiv.org/abs/hep-ph/0603268
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109936
dc.subjectHigh Energy Physics - Phenomenology
dc.titleMatter Effect on Neutrino Oscillations from the violation of Universality in Neutrino Neutral Current Interactions
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