Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-10-23
Phys.Rev.Lett. 81 (1998) 5060-5063
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, 2 figures To be published in Physical Review Letters
Scientific paper
10.1103/PhysRevLett.81.5060
Observations of atmospheric neutrinos by the SuperKamiokande collaboration have demonstrated large mixing of the muon-neutrino. However the present atmospheric neutrino data does not significantly constrain the associated mixing of the electron-neutrino, or the sign of the mass-squared difference. Here we identify the diagnostics for these quantities and they also test the theory of how matter affects neutrino oscillations. These diagnostics are a dip in the sub-GeV muon flux at a zenith angle of 110 degrees, a bump in the electron up-down asymmetry at multi-GeV energies and a bump in the muon-antimuon upward asymmetry.
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