Exploring Neutrino Oscillations with Superbeams

Abstract

We consider the medium- and long-baseline oscillation physics capabilities of intense muon-neutrino and muon-antineutrino beams produced using future upgraded megawatt-scale high-energy proton beams. In particular we consider the potential of these conventional neutrino ``superbeams'' for observing ν_μ\toν_e oscillations, determining the hierarchy of neutrino mass eigenstates, and measuring CP-violation in the lepton sector. The physics capabilities of superbeams are explored as a function of the beam energy, baseline, and the detector parameters. The trade-offs between very large detectors with poor background rejection and smaller detectors with excellent background rejection are illustrated. We find that it may be possible to observe ν_μ\toν_e oscillations with a superbeam provided that the amplitude parameter \sin^2 2θ_{13} is larger than a few \times 10^{-3}. If \sin^2 2θ_{13} is of order 10^{-2} or larger, then the neutrino mass hierarchy can be determined in long-baseline experiments, and if in addition the large mixing angle MSW solution describes the solar neutrino deficit then there is a small region of parameter space within which maximal CP-violation in the lepton sector would be observable in a low-energy medium-baseline experiment. We explicitly consider massive water Cherenkov and liquid argon detectors at superbeams with neutrino energies ranging from 1 GeV to 15 GeV, and baselines from 295 km to 9300 km. Finally, we compare the oscillation physics prospects at superbeams with the corresponding prospects at neutrino factories. The sensitivity at a neutrino factory to CP violation and the neutrino mass hierarchy extends to values of the amplitude parameter \sin^2 2θ_{13} that are one to two orders of magnitude lower than at a superbeam.

Revtex (singlespaced), 41 pages, uses epsf.sty, 12 postscript figures. Minor corrections and notation changes, expanded discussions, x-axis numbers added to Fig.9(a),(c). To be published in Phys. Rev. D

References in corpus (37)

• Golden measurements at a neutrino factory
• GNO Solar Neutrino Observations: Results for GNOI
• Global three-neutrino oscillation analysis of neutrino data
• Testing Matter Effects in Very Long Baseline Neutrino Oscillation Experiments
• CPT-odd Resonances in Neutrino Oscillations
• Neutrino Decay and Atmospheric Neutrinos
• (3+1)-spectrum of neutrino masses: A chance for LSND?
• Resolving the Solar Neutrino Problem with KamLAND
• Long Baseline Neutrino Physics with a Muon Storage Ring Neutrino Source
• CP and T Violation in Neutrino Oscillations and Invariance of Jarlskog's Determinant to Matter Effects
• Is Large Mixing Angle MSW the Solution of the Solar Neutrino Problems?
• Neutrino mixing and CP-violation
• Fate of the Sterile Neutrino
• Long-Baseline Study of the Leading Neutrino Oscillation at a Neutrino Factory
• Physics potential at a neutrino factory: can we benefit from more than just detecting muons?
• New Formulation of Matter Effects on Neutrino Mixing and CP Violation
• Matter Effects on Neutrino Oscillations in Long Baseline Experiments
• CP and T violation in long baseline experiments with low energy neutrino from muon storage ring
• Determination of the pattern of neutrino masses at a Neutrino Factory
• Extracting Matter Effects, Masses and Mixings at a Neutrino Factory
• Optimizing T-violating Effects for Neutrino Oscillations in Matter
• The geometry of atmospheric neutrino production
• Four-neutrino oscillation solutions of the atmospheric neutrino anomaly
• Neutrino Oscillations at an Entry-Level Neutrino Factory and Beyond
• Matter profile effect in neutrino factory
• Non standard analysis of the solar neutrino anomaly (updated including the SNO day/night spectral data)
• Matter effects in long baseline experiments, the flavor content of the heaviest (or lightest) neutrino and the sign of Delta m^2
• Measuring CP-violation with a neutrino factory
• Global and Unified Analysis of Solar Neutrino Data
• Matter Enhancement of T Violation in Neutrino Oscillation
• Short-Baseline Neutrino Oscillations at a Neutrino Factory
• Commutators of Lepton Mass Matrices, CP Violation, and Matter Effects in Medium-Baseline Neutrino Experiments
• Earth Matter Effect in 7Be Solar Neutrino Experiments
• Day-night asymmetry of high and low energy solar neutrino events in Super-Kamiokande and in the Sudbury Neutrino Observatory
• A Comparison of the Physics Potential of Future Long Baseline Neutrino Oscillation Experiments
• Masses and Mixings from Neutrino Beams pointing to Neutrino Telescopes
• CP violation effect in long-baseline neutrino oscillation in the four-neutrino model

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