出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The nal analysis of atmospheric neutrino events collected with the MACRO
detector is presented. Three di
erent classes of events, generated by neutrinos in di
erent
energy ranges, are studied in terms of rates, angular distributions and estimated energies.
The results are consistent for all the subsamples and indicate a flux de cit depending on
energy and pathlength of neutrinos. The no oscillation hypothesis is excluded at 5,
while the hypothesis of ! oscillation gives a satisfactory description of all data.
The parameters with higher probability in a two flavor scenario are m2 = 2:3 10−3
eV2 and sin2 2 = 1.
