New MACRO results on atmospheric neutrino oscillations

Details New MACRO results on atmospheric neutrino oscillations New MACRO results on atmospheric neutrino oscillations

2004-07-12

arxiv.org/abs/hep-ex/0407023v2

Phys.Atom.Nucl. 67 (2004) 1139-1146; Yad.Fiz. 67 (2004) 1165-1171

Physics

High Energy Physics

High Energy Physics - Experiment

Invited Paper at the NANP03 Int. Conf., Dubna, 2003

Scientific paper

10.1134/1.1772449

The final results of the MACRO experiment on atmospheric neutrino oscillations are presented and discussed. The data concern different event topologies with average neutrino energies of ~3 and ~50 GeV. Multiple Coulomb Scattering of the high energy muons in absorbers was used to estimate the neutrino energy of each event. The angular distributions, the L/E_nu distribution, the particle ratios and the absolute fluxes all favour nu_mu --> nu_tau oscillations with maximal mixing and Delta m^2 =0.0023 eV^2. A discussion is made on the Monte Carlos used for the atmospheric neutrino flux. Some results on neutrino astrophysics are also briefly discussed.

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