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.
Ambrosio M., Antolini R., Auriemma G., Bakari D., Baldini A., Barbarino G.C., et al. (2001). Matter effects in upward-going muons and sterile neutrino oscillations. PHYSICS LETTERS. SECTION B, 517(1-2), 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.
