We report on the first measurement of the flux of upgoing muons resulting from interactions of atmospheric neutrinos in the rock below MACRO. The ratio of the observed to the expected number of events integrated over all nadir angles is 0.73 +/- .09stat. +/- .06sys. +/- .12theor.. The flux of upgoing muons as a function of nadir angle is presented and compared to Monte Carlo expectations. At the 90% confidence level, the data are consistent with no neutrino oscillations or some possible oscillation hypotheses with the parameters suggested by the Kamiokande contained-event analysis.
Atmospheric neutrino flux measurement using upgoing muons / Barbarino, Giancarlo; Guarino, Fausto. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 357:(1995), pp. 481-486. [10.1016/0370-2693(95)00958-N]
Atmospheric neutrino flux measurement using upgoing muons
BARBARINO, GIANCARLO;GUARINO, FAUSTO
1995
Abstract
We report on the first measurement of the flux of upgoing muons resulting from interactions of atmospheric neutrinos in the rock below MACRO. The ratio of the observed to the expected number of events integrated over all nadir angles is 0.73 +/- .09stat. +/- .06sys. +/- .12theor.. The flux of upgoing muons as a function of nadir angle is presented and compared to Monte Carlo expectations. At the 90% confidence level, the data are consistent with no neutrino oscillations or some possible oscillation hypotheses with the parameters suggested by the Kamiokande contained-event analysis.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
