Distinction of atmospheric - and -oscillations using short or intermediate baseline experiments
CERN, EP Division, CH-1211 Genève 23, Switzerland
Received: 6 November 1998 / Published online: 11 February 1999
The current case for atmospheric oscillations in active or sterile neutrinos is reviewed. It is argued that neither the study of neutral current events at Super-Kamiokande, nor the information obtained from future long baseline experiments might be sufficient to unambiguously decide between these two scenarios. However, a combination of these results with the results from future short or intermediate baseline appearance experiments would clearly resolve most of the remaining ambiguities. This conclusion does not strongly depend on whether the results from the LSND experiment will be confirmed or not. In the case that LSND would be confirmed, a negative result in such a short or intermediate baseline experiment would also unambiguously exclude the interpretation of LSND as indirect -- oscillations.