The angular distribution of upward-going muons produced by atmospheric neutrinos in the rock below the MACRO detector shows anomalies in good agreement with two flavor vμ → vτ oscillations with maximum mixing and Δm2 around 0.0024 eV2. Exploiting the dependence of magnitude of the matter effect on oscillation channel, and using a set of 809 upward-going muons observed in MACRO, we show that the two flavor vμ → vs oscillation is disfavored with 99% C.L. with respect to vμ → vτ. © 2001 Elsevier Science B.V. All rights reserved.
Matter effects in upward-going muons and sterile neutrino oscillations / Ambrosio M.; Antolini R.; Auriemma G.; Bakari D.; Baldini A.; Barbarino G.C.; Barish B.C.; Battistoni G.; Becherini Y.; Bellotti R.; Bemporad C.; Bernardini P.; Bilokon H.; Bisi V.; Bloise C.; Bower C.; Brigida M.; Bussino S.; Cafagna F.; Calicchio M.; Campana D.; Carboni M.; Caruso R.; Cecchini S.; Cei F.; Chiarella V.; Choudhary B.C.; Coutu S.; de Cataldo G.; Dekhissi H.; de Marzo C.; de Mitri I.; Derkaoui J.; de Vincenzi M.; di Credico A.; Erriquez O.; Favuzzi C.; Forti C.; Fusco P.; Giacomelli G.; Giannini G.; Giglietto N.; Giorgini M.; Grassi M.; Gray L.; 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 D.S.; Lipari P.; Longley N.P.; Longo M.J.; Loparco F.; Maaroufi F.; Mancarella G.; Mandrioli G.; Margiotta A.; Marini A.; Martello D.; Marzari-Chiesa A.; Mazziotta M.N.; Michael D.G.; Mikheyev S.; Miller L.; Monacelli P.; Montaruli T.; Monteno M.; Mufson S.; Musser J.; Nicolo D.; Nolty R.; Orth C.; Osteria G.; Palamara O.; Patera V.; Patrizii L.; Pazzi R.; Peck C.W.; Perrone L.; Petrera S.; Pistilli P.; Popa V.; Raino A.; Reynoldson J.; Ronga F.; Rrhioua A.; Satriano C.; Scapparone E.; Scholberg K.; Sciubba A.; Serra P.; Sioli M.; Sirri G.; Sitta M.; Spinelli P.; Spinetti M.; Spurio M.; Steinberg R.; Stone J.L.; Sulak L.R.; Surdo A.; Tarle G.; Togo V.; Vakili M.; Walter C.W.; Webb R.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 517:1-2(2001), pp. 59-66. [10.1016/S0370-2693(01)00992-3]
Matter effects in upward-going muons and sterile neutrino oscillations
Becherini Y.;Giacomelli G.;Margiotta A.;Sioli M.;Spurio M.;
2001
Abstract
The angular distribution of upward-going muons produced by atmospheric neutrinos in the rock below the MACRO detector shows anomalies in good agreement with two flavor vμ → vτ oscillations with maximum mixing and Δm2 around 0.0024 eV2. Exploiting the dependence of magnitude of the matter effect on oscillation channel, and using a set of 809 upward-going muons observed in MACRO, we show that the two flavor vμ → vs oscillation is disfavored with 99% C.L. with respect to vμ → vτ. © 2001 Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
