Measurements of atmospheric muon neutrino oscillations, global analysis of the data collected with MACRO detector


Journal Article

The final analysis of atmospheric neutrino events collected with the MACRO detector is presented. Three different classes of events, generated by neutrinos in different energy ranges, are studied looking at rates, angular distributions and estimated energies. The results are consistent for all the subsamples and indicate a flux deficit that depends on energy and path-length of neutrinos. The no-oscillation hypothesis is excluded at ∼ 5σ, while the hypothesis of v μ → v τ oscillation gives a satisfactory description of all data. The parameters with highest probability in a two flavor scenario are sin 2 2θ m = 1 and Δm 2 = 0.0023 eV 2 . This result is independent of the absolute normalization of the atmospheric neutrino fluxes. The data can also be used to put experimental constrain on this normalization. © Springer-Verlag / Società Italiana di Fisica 2004.

Full Text

Duke Authors

Cited Authors

  • Ambrosio, M; Antolini, R; Bakari, D; Baldini, A; Barbarino, GC; Barish, BC; Battistoni, G; Becherini, Y; Bellotti, R; Bemporad, C; Bernardini, P; Bilokon, H; Bloise, C; Bower, C; Brigida, M; Cafagna, F; Campana, D; Carboni, M; Cecchini, S; Cei, F; Chiarella, V; Choudhary, BC; Cosson, D; Coutu, S; de Cataldo, G; Dekhissi, H; de Marzo, C; de Mitri, I; Denni, U; Derkauoi, J; de Vincenzi, M; di Credico, A; Favuzzi, C; Forti, C; Frani, A; Fusco, P; Giacomelli, G; Giannini, G; Giglietto, N; Giorgini, M; Grassi, M; Grillo, A; Guarino, F; Gustavino, C; Habig, A; Hanson, K; Heinz, R; Iarocci, E; Katsavounidis, E; Katsavounidis, I; Kearns, E; Kim, H; Kyriazopoulou, S; Lamanna, E; Lane, C; Levin, DS; Lipari, P; Longo, MJ; Loparco, F; Maaroufi, F; Mancarella, G; Mandrioli, G; Manzoor, S; Margiotta, A; Marini, A; Martello, D; Marzari-Chiesa, A; Mazziotta, MN; Mengucci, A; Michael, DG; Mikheyev, S; Monacelli, P; Montaruli, T; Monteno, M; Mufson, S; Musser, J; Nicolò, D; Nolty, R; Orth, C; Osteria, G; Palamara, O; Patera, V; Patrizii, L; Pazzi, R

Published Date

  • December 1, 2004

Published In

Volume / Issue

  • 36 / 3

Start / End Page

  • 323 - 339

Electronic International Standard Serial Number (EISSN)

  • 1434-6052

International Standard Serial Number (ISSN)

  • 1434-6044

Digital Object Identifier (DOI)

  • 10.1140/epjc/s2004-01951-9

Citation Source

  • Scopus