Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2004-06-14
Eur.Phys.J.C33:s826-s828,2004
Physics
High Energy Physics
High Energy Physics - Experiment
3 pages, 6 figures, paper presented at the HEP EPS Conf., Aachen, Germany, July 2003 Added references (19/08/2004)
Scientific paper
10.1140/epjcd/s2003-03-909-2
The final results of the MACRO experiment on atmospheric neutrino oscillations are presented. The data concern different 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 favour 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.
Giacomelli Giorgio
Margiotta Annarita
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