Abstract
This Letter reports results from the MINOS experiment based on its initial exposure to neutrinos from the Fermilab NuMI beam. The rates and energy spectra of charged current interactions are compared in two detectors located along the beam axis at distances of 1 and 735 km. With 120 GeV protons incident on the NuMI target, 215 events with energies below 30 GeV are observed at the Far Detector, compared to an expectation of events. The data are consistent with disappearance via oscillations with and (68% C.L.).
- Received 4 August 2006
DOI:https://doi.org/10.1103/PhysRevLett.97.191801
©2006 American Physical Society