6533b7ddfe1ef96bd1274942
RESEARCH PRODUCT
The earth Mantle-Core effect in charge-asymmetries for atmospheric neutrino oscillations
Jose BernabeuS. Palomares-ruizAna Beatriz Alvarez PerezS. T. Petcovsubject
PhysicsParticle physicsNuclear and High Energy PhysicsMuonPhysics::Instrumentation and Detectorsmedia_common.quotation_subjectAstrophysics::High Energy Astrophysical PhenomenaHigh Energy Physics::PhenomenologyFísicaObservableAsymmetryCore (optical fiber)MomentumMagnitude (astronomy)High Energy Physics::ExperimentAstrophysics::Earth and Planetary AstrophysicsNeutrinoMixing (physics)media_commondescription
Earth medium effects in the three-neutrino oscillations of atmospheric neutrinos are observable under appropriate conditions. This paper generalizes the study of the medium effects and the possibility of their observation in the atmospheric neutrino oscillations from the case of neutrinos traversing only the Earth mantle, where the density is essentially constant, to the case of atmospheric neutrinos crossing also the Earth core. In the latter case new resonance-like effects become apparent. We calculate the CPT-odd asymmetry for the survival probability of muon neutrinos and the observable muon-charge asymmetry, taking into account the different atmospheric neutrino fluxes, and show the dependence of these asymmetries on the sign of $\Delta m^{2}_{3 1}$ and on the magnitude of the mixing angle $\theta_{13}$. A magnetized detector with a sufficiently good neutrino momentum resolution is required for the observation of the muon-charge asymmetry generated by the Earth mantle-core effect.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-04-01 | Physics Letters B |