Exploring Neutrino Mixing with Low Energy Superbeams

Abstract

We explore as clearly as possible the features of neutrino oscillation which are relevant for measurements of the CP violating Kobayashi-Maskawa phase delta and the sign of Δm^2_{13}. We focus on the so called low-energy option and discuss principles for optimizing experimental parameters to measure these two quantities simultaneously. Toward the goal, we first formulate a method for obtaining a bird-eye view of the phenomenon of neutrino oscillation by introducing a new powerful tool called the ``CP trajectory diagram in bi-probability space''. It allows us to represent pictorially the three effects separately in a single diagram; effect from genuine CP violation due to the sin delta term, effect from the CP conserving cos delta term, and the fake CP violating effect due to earth matter. By using the CP trajectory diagram we observe that there is a two-fold ambiguity in the determination of delta which is related with the sign of Delta m^2_{13}. We then address the question of what are the promising options for conceptual design of experiments at low energies which looks for CP violation and at the same time would resolve the two-fold ambiguity. We point out that a version with distance of about 700 km, with a megaton class water Cherenkov detector gives an optimal design which allows simultaneous determination of delta and the sign of Delta m^2_{13} {\it in situ}. We also point out that there is a possibility that the similar {\it in situ} measurement of both quantities can be done at the Phase II of JHF experiment with much shorter baseline, under the assumption of nature's kind setting of delta to the region of sin{delta} \cdot Delta m^2_{13} < 0. A technique of running at high (sim 1 GeV) and low (sim 0.5 GeV) beam energies is proposed as a method for better identification of delta.

31 pages, 8 figures, in JHEP style

References in corpus (4)

• Detection of Accelerator-Produced Neutrinos at a Distance of 250 km
• Exploring Neutrino Oscillations with Superbeams
• Correlations of errors in measurements of CP violation at neutrino factories
• Prospects of Very Long Base-Line Neutrino Oscillation Experiments with the JAERI-KEK High Intensity Proton Accelerator

Cited by in corpus (230)

• Phenomenology with Massive Neutrinos
• Simulation of long-baseline neutrino oscillation experiments with GLoBES
• New features in the simulation of neutrino oscillation experiments with GLoBES 3.0
• Breaking Eight-fold Degeneracies in Neutrino CP Violation, Mixing, and Mass Hierarchy
• Superbeams versus Neutrino Factories
• NuSTEC White Paper: Status and Challenges of Neutrino-Nucleus Scattering
• CP Violation and Neutrino Oscillations
• Physics at a future Neutrino Factory and super-beam facility
• Another possible way to determine the Neutrino Mass Hierarchy
• Leptonic CP violation
• Resolving Neutrino Mass Hierarchy and CP Degeneracy by Two Identical Detectors with Different Baselines
• Prospects of accelerator and reactor neutrino oscillation experiments for the coming ten years
• Neutrino Factories and the "Magic" Baseline
• The silver channel at the Neutrino Factory
• Reactor Measurement of ${\theta }_{13}$ and Its Complementarity to Long-Baseline Experiments
• Physics potential of the CERN-MEMPHYS neutrino oscillation project
• Determination of the Neutrino Mass Hierarchy at an Intermediate Baseline
• Exact Formulas and Simple CP dependence of Neutrino Oscillation Probabilities in Matter with Constant Density
• Reactor Neutrino Experiments Compared to Superbeams
• Non-Standard Interactions in propagation at the Deep Underground Neutrino Experiment
• Confusing non-standard neutrino interactions with oscillations at a neutrino factory
• Optimal $\beta$-beam at the CERN-SPS
• Neutrino oscillation physics with a higher $\gamma$ $\beta$-beam
• Physics Potentials with the Second Hyper-Kamiokande Detector in Korea
• Leptonic Unitarity Triangle and CP-violation
• The synergy of the golden and silver channels at the Neutrino Factory
• Superbeams plus Neutrino Factory: the golden path to leptonic CP violation
• Large underground, liquid based detectors for astro-particle physics in Europe: scientific case and prospects
• Optimization of a neutrino factory oscillation experiment
• Resolving parameter degeneracies in long-baseline experiments by atmospheric neutrino data
• Quantization of Fermionic Fields with Two Mass States in the First Order Formalism
• Mass Hierarchy Determination via future Atmospheric Neutrino Detectors
• Exact Formula of Probability and CP Violation for Neutrino Oscillations in Matter
• Determining the Neutrino Mass Hierarchy with Atmospheric Neutrinos
• Earth Matter Effects at Very Long Baselines and the Neutrino Mass Hierarchy
• Neutrino factory optimization for non-standard interactions
• Parameter Degeneracies in Neutrino Oscillation Measurement of Leptonic CP and T Violation
• Resolving Eight-Fold Neutrino Parameter Degeneracy by Two Identical Detectors with Different Baselines
• Synergies between the first-generation JHF-SK and NuMI superbeam experiments
• Flavor Symmetry L_e - L_mu - L_tau, Atmospheric Neutrino Mixing and CP Violation in the Lepton Sector
• Topical Review on "Beta-beams"
• Resolving the octant of theta23 with T2K and NOvA
• Neutrino Mixing Sum Rules and Oscillation Experiments
• Neutrino Masses and Oscillations: Triumphs and Challenges
• Probing Non-Standard Neutrino Interactions with Neutrino Factories
• Testing neutrino flavor mixing plus decay with neutrino telescopes
• Study of the eightfold degeneracy with a standard $\beta$-Beam and a Super-Beam facility
• Perturbation Theory of Neutrino Oscillation with Nonstandard Neutrino Interactions
• How astrophysical neutrino sources could be used for early measurements of neutrino mass hierarchy and leptonic CP phase
• Physics and optimization of beta-beams: From low to very high gamma
• New ambiguity in probing CP violation in neutrino oscillations
• Large-Theta(13) Perturbation Theory of Neutrino Oscillation for Long-Baseline Experiments
• Exploring Leptonic CP Violation by Reactor and Neutrino Superbeam Experiments
• Getting the best out of T2K and NOvA
• CP violation in neutrino oscillations and new physics
• Off--axis Beams and Detector Clusters: Resolving Neutrino Parameter Degeneracies
• Majorana Neutrinos, Neutrino Mass Spectrum and the |<m>| ~ 0.001 eV Frontier in Neutrinoless Double Beta Decay
• Potential of optimized NOvA for large theta(13) & combined performance with a LArTPC & T2K
• Solving the neutrino parameter degeneracy by measuring the T2K off-axis beam in Korea
• Untangling CP Violation and the Mass Hierarchy in Long Baseline Experiments
• A low energy neutrino factory for large ${\theta }_{13}$
• Appearance and disappearance signals at a beta-Beam and a Super-Beam facility
• New look at the degeneracies in the neutrino oscillation parameters, and their resolution by T2K, NO$\nu$A and ICAL
• How two neutrino superbeam experiments do better than one
• Physics Reach of DUNE with a Light Sterile Neutrino
• The Complementarity of Eastern and Western Hemisphere Long-Baseline Neutrino Oscillation Experiments
• Identifying the Neutrino mass Ordering with INO and NOvA
• Overall Feature of CP dependence for Neutrino Oscillation Probability in Arbitrary Matter Profile
• Neutrino mass hierarchy and ${\theta }_{13}$ with a magic baseline beta-beam experiment
• From parameter space constraints to the precision determination of the leptonic Dirac CP phase
• Octant of ${\theta }_{23}$ in danger with a light sterile neutrino
• The role of matter density uncertainties in the analysis of future neutrino factory experiments
• Clone flow analysis for a theory inspired Neutrino Experiment planning
• Neutrino Mixing and Neutrino Telescopes
• Determination of the Neutrino Mass Hierarchy via the Phase of the Disappearance Oscillation Probability with a Monochromatic \barν_e Source
• Resolving theta_{23} Degeneracy by Accelerator and Reactor Neutrino Oscillation Experiments
• A Neutrino Factory for both Large and Small theta_13
• Non-Standard Interactions at a Neutrino Factory: Correlations and CP violation
• The European Spallation Source neutrino Super Beam Conceptual Design Report
• Comparison of the calorimetric and kinematic methods of neutrino energy reconstruction in disappearance experiments
• Which long-baseline neutrino experiments are preferable?
• Extrinsic CPT Violation in Neutrino Oscillations in Matter
• Method for Determination of $|U_{e3}|$ in Neutrino Oscillation Appearance Experiments
• Determination of mass hierarchy with medium baseline reactor neutrino experiments
• Non-standard Hamiltonian effects on neutrino oscillations
• Supernova neutrinos can tell us the neutrino mass hierarchy independently of flux models
• Resolving CP Violation by Standard and Nonstandard Interactions and Parameter Degeneracy in Neutrino Oscillations
• Alternating ions in a $\beta$-beam to solve degeneracies
• Neutrino oscillation probabilities through the looking glass
• Determination of theta_{23} in Long-Baseline Neutrino Oscillation Experiments with Three-Flavor Mixing Effects
• Determining Neutrino Mass Hierarchy by Precision Measurements in Electron and Muon Neutrino Disappearance Experiments
• Precision physics with a wide band super neutrino beam
• Probing Nonstandard Neutrino Physics by Two Identical Detectors with Different Baselines
• Interplay between Appearance and Disappearance Channels for Precision Measurements of ${\theta }_{23}$ and $\delta$
• Super-NOvA: a long-baseline neutrino experiment with two off-axis detectors
• Physics with near detectors at a neutrino factory
• On the improvement of the low energy neutrino factory
• CP and T Trajectory Diagrams for a Unified Graphical Representation of Neutrino Oscillations
• Discovery Potential of T2K and NOvA in the Presence of a Light Sterile Neutrino
• ${\nu }_{\mu }$ disappearance at the SPL, T2K-I, NO$\nu$A and the Neutrino Factory
• What can we learn about the lepton CP phase in the next 10 years?
• Physics with a very long neutrino factory baseline
• Determining the Neutrino Mass Hierarchy and CP Violation in NOvA with a Second Off-Axis Detector
• An incremental approach to unravel the neutrino mass hierarchy and CP violation with a long-baseline Superbeam for large ${\theta }_{13}$
• Implications of sterile neutrinos for medium/long-baseline neutrino experiments and the determination of ${\theta }_{13}$
• Combining Accelerator and Reactor Measurements of theta_13; The First Result
• Optimizing the greenfield Beta-beam
• Dissipative Effect in Long Baseline Neutrino Experiments
• Unraveling neutrino parameters with a magical beta-beam experiment at INO
• Correlated, Precision Measurements of θ_{23} and $\delta$ using only the Electron Neutrino Appearance Experiments
• Parameter Degeneracy in Flavor-Dependent Reconstruction of Supernova Neutrino Fluxes
• The discovery channel at the Neutrino Factory: ${\nu }_{\mu }\to {\nu }_{\tau }$ pointing to sterile neutrinos
• Prospects of Very Long Base-Line Neutrino Oscillation Experiments with the KEK-JAERI High Intensity Proton Accelerator
• Exploring the three flavor effects with future superbeams using liquid argon detectors
• NOvA and T2K: The race for the neutrino mass hierarchy
• Physics potential of the ESS$\nu$SB
• New plots and parameter degeneracies in neutrino oscillations
• Measuring CP violation and mass ordering in joint long baseline experiments with superbeams
• Two experiments for the price of one? -- The role of the second oscillation maximum in long baseline neutrino experiments
• On in situ Determination of Earth Matter Density in Neutrino Factory
• What would it take to determine the neutrino mass hierarchy if ${\theta }_{13}$ were too small?
• Combining CPT-conjugate Neutrino channels at Fermilab
• Determining the Octant of ${\theta }_{23}$ at LBNE in conjunction with Reactor Experiments
• Three-flavour oscillations with accelerator neutrino beams
• ${\theta }_{13}$, $\delta$ and the neutrino mass hierarchy at a $\gamma =350$ double baseline Li/B $\beta$-Beam
• Understanding CP phase-dependent measurements at neutrino superbeams in terms of bi-rate graphs
• Magical properties of 2540 Km baseline Superbeam Experiment
• Sensitivity of T2KK to the non-standard interaction in propagation
• The $\tau$-contamination of the golden muon sample at the Neutrino Factory
• CERN to Gran Sasso; An ideal distance for superbeam?
• An intermediate gamma beta-beam neutrino experiment with long baseline
• Constraining the absolute neutrino mass scale and Majorana CP violating phases by future neutrinoless double beta decay experiments
• Recoilless Resonant Absorption of Monochromatic Neutrino Beam for Measuring Delta m^2_{31} and theta_{13}
• Could One Find Petroleum Using Neutrino Oscillations in Matter?
• 2540 km: Bimagic baseline for neutrino oscillation parameters
• Optimized Two-Baseline Beta-Beam Experiment
• Imprints of scalar NSI on the CP-violation sensitivity using synergy among DUNE, T2HK and T2HKK
• The MOMENT to search for CP violation
• Solving the octant degeneracy with the Silver channel
• Exceptional Sensitivity to Neutrino Parameters with a Two Baseline Beta-Beam Set-up
• The gamma = 100 Beta-Beam revisited
• Conflict between the identification of cosmic neutrino source and the sensitivity to mixing angles in neutrino telescope
• Standard versus Non-Standard CP Phases in Neutrino Oscillation in Matter with Non-Unitarity
• Direct test of the MSW effect by the solar appearance term in beam experiments
• Neutral currents and tests of three-neutrino unitarity in long-baseline experiments
• Physics Potential of the Fermilab NuMI beamline
• Lower Bound on |U_{e3}|^2 from Single and Double Beta Decay Experiments
• A Possible Future Long Baseline Neutrino and Nucleon Decay Experiment with a 100 kton Liquid Argon TPC at Okinoshima using the J-PARC Neutrino Facility
• Neutrino factory in stages: Low energy, high energy, off-axis
• Neutrino oscillation physics at an upgraded CNGS with large next generation liquid Argon TPC detectors
• Perturbing neutrino oscillations around the solar resonance
• Determination of the neutrino mass hierarchy in the regime of small matter effect
• Neutrino parameters from matter effects in $P_{ee}$ at long baselines
• A comparative study between ESSnuSB and T2HK in determining the leptonic CP phase
• Synergies between neutrino oscillation experiments: An `adequate' configuration for LBNO
• The impact of solar and atmospheric parameter uncertainties on the measurement of ${\theta }_{13}$ and $\delta$
• Matter effects at the T2HK and T2HKK experiments
• Parameter Degeneracy in Neutrino Oscillation -- Solution Network and Structural Overview --
• Understanding the performance of the low energy neutrino factory: the dependence on baseline distance and stored-muon energy
• A combined beta-beam and electron capture neutrino experiment
• Large Non-perturbative Effects of Small Δm^2_{21}/Δm^2_{31} and \sin θ_{13} on Neutrino Oscillation and CP Violation in Matter
• Measurement of three-family neutrino mixing and search for CP violation
• Biprobability approach to CP phase degeneracy from non-standard neutrino interactions
• Phenomenology of future neutrino experiments with large Theta(13)
• Sensitivity to sterile neutrino mixings and the discovery channel at a neutrino factory
• Probing CP violation at LBNE with reactor experiments
• CP violation and mass hierarchy at medium baselines in the large theta(13) era
• A Novel Approach to Study Atmospheric Neutrino Oscillation
• Enhancement of CP Violating terms for Neutrino Oscillation in Earth Matter
• A Mass Ordering Sum Rule for the Neutrino Disappearance Channels in T2K, NOvA and JUNO
• Revisiting the sensitivity studies for leptonic CP violation and mass hierarchy with T2K, NOvA and LBNE experiments
• Proposal of a Simple Method to Estimate Neutrino Oscillation Probability and CP Violation in Matter
• Energy Dependence of CP-Violation Reach for Monochromatic Neutrino Beam
• Physics potential of neutrino oscillation experiment with a far detector in Oki Island along the T2K baseline
• Octant Degeneracy, Quadrant of leptonic CPV phase at Long Baseline Neutrino Experiments and Baryogenesis
• Gain fractions of future neutrino oscillation facilities over T2K and NOvA
• Detecting atmospheric neutrino oscillations in the ATLAS detector at CERN
• A minimal Beta Beam with high-Q ions to address CP violation in the leptonic sector
• Probing the Neutrino Mass Hierarchy with Super-Kamiokande
• T-violation in flavour oscillations as a test for relativity principles at a neutrino factory
• Understanding the degeneracies in NO$\nu$A data
• CP, T and CPT violation in future long baseline experiments
• The Physics Potential of Future Long Baseline Neutrino Oscillation Experiments
• Optimization of the baseline and the parent muon energy for a low energy neutrino factory
• Symmetry Finder applied to the 1-3 mass eigenstate exchange symmetry
• New Index of CP Phase Effect and ${\theta }_{13}$ Screening in Long Baseline Neutrino Experiments
• Neutrino Beams From Electron Capture at High Gamma
• The Physics Potential of Future Long Baseline Neutrino Oscillation Experiments
• On the determination of the leptonic CP phase
• Measuring the Leptonic CP Phase in ${\nu }_{\mu }\to {\nu }_{\mu }$ Oscillations
• CP Trajectory Diagram; A tool for pictorial representation of CP and matter effects in neutrino oscillations
• Lectures on neutrino phenomenology
• Learning from tau appearance
• Neutrino Oscillations at low energy long baseline experiments in the presence of nonstandard interactions and parameter degeneracy
• Constraints on the non-standard interaction in propagation from atmospheric neutrinos
• Physics reach of $\beta$-beams and $\nu$-factories: the problem of degeneracies
• Effect of Leptonic CP Phase in nu_mu --> nu_mu Oscillations
• Unity of CP and T Violation in Neutrino Oscillations
• Rephasing invariance and the neutrino mu-tau symmetry
• European facilities for accelerator neutrino physics: perspectives for the decade to come
• Exploring neutrino parameters with a beta-beam experiment from FNAL to DUSEL
• Resolving Octant Degeneracy at LBL experiment by combining Daya Bay Reactor Setup
• Degeneracies at a beta-Beam and a Super-Beam Facility
• An Appearance-Like Reactor Experiment To Measure Ue3
• Symmetry Finder: A method for hunting symmetry in neutrino oscillation
• Future neutrino oscillation facilities: physics priorities and open issues
• Measuring Earth Matter Density and Testing the MSW Theory
• CP-violation reach of an electron capture neutrino beam
• Neutrino Oscillations in Finite Time Path Out-of-Equilibrium Thermal Field Theory
• Neutrino factories - Physics potential and present status
• Alleviating the present tension between T2K and NO$\nu$A with nonstandard neutrino interactions
• Bose Condensation and the BTZ Black Hole
• Enhancing the sensitivity to neutrino oscillation parameters using synergy between T2K, NO$\nu$A and JUNO
• Revising the Solution of the Neutrino Oscillation Parameter Degeneracies at Neutrino Factories
• Comparative study of the 1-2 exchange symmetries in neutrino frameworks with global and local validities
• Effect of Matter Density in T2HK and DUNE
• The impact of hierarchy upon the values of neutrino mixing parameters
• Symmetry in neutrino oscillation in matter with non-unitarity
• Probing Non-Standard Neutrino Physics at Neutrino Factory and T2KK
• Updated physics performance of the ESSnuSB experiment
• Impact of CP violation searches at MOMENT experiment with sterile neutrinos
• Resolving the Octant theta(23) Degeneracy by Neutrino Oscillation Experiments
• Long Baseline Neutrino Experiments with Two-Detector Setup
• Optimizing the Determination of the Neutrino Mixing Angle ${\theta }_{13}$ from Reactor Data
• Summary of Working Group 2
• If Theta(13) is large, then what?
• Three-flavor analysis of long-baseline experiments
• Long baseline neutrino oscillations: Theoretical aspects
• Impact of unitarity violation on sensitivity of the leptonic CP phase at Hyper-Kamiokande and DUNE
• The Physics of antineutrinos in DUNE and resolution of octant degeneracy