Measurement of the scaling x and y distributions of neutral and charged current nu/sub. mu. / interactions

We report on a joint study of the neutral and charged current reactions nu/sub ..mu../ + Ne ..-->.. h + nu/sub ..mu../ and nu/sub ..mu../ + Ne h + ..mu../sup -/. With the aim to obtain distributions in the scaling variables x and y. The experiment was performed at the FNAL narrow band neutrino beam (neutrino energies up to 240 GeV; mean energy: 60 GeV) and used the 15-foot bubble chamber filled with a heavy neon-hydrogen mix (59 atomic percent of neon) to detect neutrino interactions. The narrow band beam allows one to determine the four-momentum of the incoming neutrino from the radial position of the interaction vertex. The bubble chamber, on the other hand, permits one to detect the detailed composition of the final state hadronic system, h, and to reconstruct its four-momentum. From these the four-momentum of the outgoing lepton can be reconstructed on an event-by-event basis. The quality of the lepton reconstruction can be studied on charged current events for the outgoing lepton, the ..mu../sup -/, is detected. The data sample consists of 950 nu/sub ..mu../ interaction candidates within a reduced fiducial volume which was chosen to insure a good containment of the hadronic shower and tomore » improve the event reconstruction.« less