We report the first observation of off-axis neutrino interactions in the MiniBooNE detector from the NuMI beam line at Fermilab. The MiniBooNE detector is located 745m from the NuMI production target, at 110mrad angle (6.3°) with respect to the NuMI beam axis. Samples of charged-current quasielastic νμ and νe interactions are analyzed and found to be in agreement with expectation. This provides a direct verification of the expected pion and kaon contributions to the neutrino flux and validates the modeling of the NuMI off-axis beam. © 2009 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
Adamson, P., Aguilar-Arevalo, A., Anderson, C., Bazarko, A., Bishai, M., Brice, S., Brown, B., Bugel, L., Cao, J., Choudhary, B., Coney, L., Conrad, J., Cox, D., Curioni, A., Djurcic, Z., Finley, D., Fleming, B., Ford, R., Gallagher, H., Garcia, F., Garvey, G., Green, C., Green, J., Harris, D., Hart, T., Hawker, E., Hylen, J., Imlay, R., Johnson, R., Karagiorgi, G., Kasper, P., Katori, T., & Kobilarcik, T. (2009). Measurement of νμ and νe events in an off-axis horn-focused neutrino beam. Physical Review Letters, 102 (21) https://doi.org/10.1103/PhysRevLett.102.211801