The energy of atmospheric neutrinos detected by MACRO was estimated using multiple Coulomb scattering of upward throughgoing muons. This analysis allows a test of atmospheric neutrino oscillations, relying on the distortion of the muon energy distribution. These results have been combined with those coming from the upward throughgoing muon angular distribution only. Both analyses are independent of the neutrino flux normalization and provide strong evidence, above the four sigma level, in favour of neutrino oscillations. (C) 2003 Published by Elsevier B.V.
Atmospheric neutrino oscillations from upward throughgoing muon multiple scattering in MACRO
CEI, FABRIZIO;NICOLO', DONATO;
2003-01-01
Abstract
The energy of atmospheric neutrinos detected by MACRO was estimated using multiple Coulomb scattering of upward throughgoing muons. This analysis allows a test of atmospheric neutrino oscillations, relying on the distortion of the muon energy distribution. These results have been combined with those coming from the upward throughgoing muon angular distribution only. Both analyses are independent of the neutrino flux normalization and provide strong evidence, above the four sigma level, in favour of neutrino oscillations. (C) 2003 Published by Elsevier B.V.File in questo prodotto:
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