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arXiv · hep-ex/0504029

MACRO results on atmospheric neutrinos

G. Giacomelli·A. Margiotta
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Abstract

We discuss the final results of the MACRO experiment on atmospheric neutrino oscillations. The data concern event topologies with average neutrino energies of ~3 and ~50 GeV. Multiple Coulomb Scattering of the high energy muons was used to estimate the neutrino energy event by event. The angular distributions, the L/E_nu distribution, the particle ratios and the absolute fluxes all favor nu_mu --> nu_tau oscillations with maximal mixing and Delta m^2 ~0.0023 eV^2. Emphasis is given to measured ratios which are not affected by Monte Carlo (MC) absolute normalization; a discussion is made on MC uncertainties. A preliminary search for possible Lorentz invariance violation contributions to atmospheric neutrino oscillations is presented and discussed.

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G. Giacomelli, A. Margiotta. 2005-04-19. MACRO results on atmospheric neutrinos. https://arxiv.org/abs/hep-ex/0504029

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