2002/03/03 by F. DeJongh, Fritz DeJongh, DeJongh, Fritz
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0203005
28 pages, 35 figures
arxiv created 2002/03/03 · openalex publication_date 2002/03/03 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We have investigated the physics potential of very long baseline experiments designed to measure numu to nue oscillation probabilities. The principles of our design are to tune the beam spectrum to the resonance energy for the matter effect, and to have the spectrum cut off rapidly above this energy. The matter effect amplifies the signal, and the cut-off suppresses backgrounds which feed-down from higher energy. The signal-to-noise ratio is potentially better than for any other conventional numu beam experiment. We find that a beam from Fermilab aimed at the Super-K detector has excellent sensitivity to sin2(2theta13) and the sign of Delta M2. If the mass hierarchy is inverted, the beam can be run in antineutrino mode with a similar signal-to-noise ratio, and event rate 55% as high as for the neutrino mode. Combining the Fermilab beam with the JHF-Kamioka proposal adds very complementary information. We find good sensitivity to maximal CP violation for values of sin2(2theta13) ranging from 0.001 to 0.05.