Author: R. Nolty for the MACRO Collaboration
Title: Measurement of the Neutrino-induced Semi-contained Events in MACRO
Abstract: A preliminary analysis is presented of low-energy ($\overline{E_\nu}\sim 4 GeV$) neutrino interactions observed by the MACRO detector.These include neutrino interactions in the detector, as well asupgoing neutrino-induced muons that stop in the detector. At theseenergies, essentially all observed interactions can be attributed toatmospheric neutrinos. A large deficit is observed compared to ano-oscillations Monte Carlo prediction, although the systematicerrors are large. However, the observation agrees well withneutrino oscillations with parameters suggested by the MACROupward throughgoing muon analysis as well as other experiments(maximal mixing with $\Delta m^2$ of a few times $10^{-3}$).
Comments: 6 pages, LaTeX, EPSF