The sign of dm2₃₁ and the muon-charge asymmetry for atmospheric neutrinos
classification
✦ hep-ph
keywords
atmosphericsignaboveactionasymmetriesasymmetrybaselinesbecomes
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We discuss the possibility to measure the sign of dm2_{31} from matter-induced charge asymmetries in atmospheric neutrino oscillations. The main conclusion is that an impact on the nu_mu survival probability requires the action of the MSW resonance, which becomes visible for baselines above \~7000 km.
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