Resolving CP Violation by Standard and Nonstandard Interactions and Parameter Degeneracy in Neutrino Oscillations

Abstract

In neutrino oscillation with non-standard interactions (NSI) the system is enriched with CP violation caused by phases due to NSI in addition to the standard lepton Kobayashi-Maskawa phase δ. In this paper we show that it is possible to disentangle the two CP violating effects by measurement of muon neutrino appearance by a near-far two detector setting in neutrino factory experiments. Prior to the quantitative analysis we investigate in detail the various features of the neutrino oscillations with NSI, but under the assumption that only one of the NSI elements, ε_{e μ} or ε_{e τ}, is present. They include synergy between the near and the far detectors, the characteristic differences between the ε_{e μ} and ε_{eτ} systems, and in particular, the parameter degeneracy. Finally, we use a concrete setting with the muon energy of 50 GeV and magnetized iron detectors at two baselines, one at L=3000 km and the other at L=7000 km, each having a fiducial mass of 50 kton to study the discovery potential of NSI and its CP violation effects. We demonstrate, by assuming 4 \times 10^{21} useful muon decays for both polarities, that one can identify non-standard CP violation down to | epsilon_{e μ} | \simeq \text{a few} \times 10^{-3}, and | ε_{e τ} | \simeq 10^{-2} at 3σCL for θ_{13} down to \sin^2 2θ_{13} = 10^{-4} in most of the region of δ. The impact of the existence of NSI on the measurement of δand the mass hierarchy is also worked out.

43 pages, 28 figures, version accepted for publication in JHEP

References in corpus (85)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Limits on Neutrino Oscillations from the CHOOZ Experiment
• Search for neutrino oscillations on a long base-line at the CHOOZ nuclear power station
• Muon Decay and Physics Beyond the Standard Model
• Golden measurements at a neutrino factory
• Neutrino Beams from Muon Storage Rings: Characteristics and Physics Potential
• Delta M_K and epsilon_K in SUSY at the Next-to-Leading order
• Present and Future Bounds on Non-Standard Neutrino Interactions
• Breaking Eight-fold Degeneracies in Neutrino CP Violation, Mixing, and Mass Hierarchy
• Results from the Palo Verde Neutrino Oscillation Experiment
• Unitarity of the Leptonic Mixing Matrix
• Exploring Neutrino Mixing with Low Energy Superbeams
• On the measurement of leptonic CP violation
• Neutrino oscillation physics with a neutrino factory
• Non-Standard Neutrino Interactions with Matter from Physics Beyond the Standard Model
• CP Violation and Neutrino Oscillations
• Physics at a future Neutrino Factory and super-beam facility
• Probing new physics with coherent neutrino scattering off nuclei
• Tests of three-flavor mixing in long-baseline neutrino oscillation experiments
• Prospects for measuring coherent neutrino-nucleus elastic scattering at a stopped-pion neutrino source
• Non-standard neutrino interactions in reactor and superbeam experiments
• Solar neutrinos as probes of neutrino-matter interactions
• Atmospheric Neutrino Oscillations and New Physics
• Non-Standard Neutrino Interactions and Neutrino Oscillation Experiments
• Limits on the Non-Standard Interactions of Neutrinos from $e^{+}{e}^{-}$ Colliders
• Resolving Neutrino Mass Hierarchy and CP Degeneracy by Two Identical Detectors with Different Baselines
• Are solar neutrino oscillations robust?
• Neutrino Factories and the "Magic" Baseline
• Large gauge invariant non-standard neutrino interactions
• Atmospheric neutrinos as probes of neutrino-matter interactions
• New CP Violation in Neutrino Oscillations
• Reactor Measurement of ${\theta }_{13}$ and Its Complementarity to Long-Baseline Experiments
• Atmospheric neutrino observations and flavor changing interactions
• Confusing non-standard neutrino interactions with oscillations at a neutrino factory
• How to Measure CP Violation in Neutrino Oscillation Experiments?
• Probing non-unitary mixing and CP-violation at a Neutrino Factory
• Status of the solution to the solar neutrino problem based on non-standard neutrino interactions
• Oscillation enhanced search for new interaction with neutrinos
• Constraining non-standard interactions in nu_e e or bar{nu}_e e scattering
• Measuring Leptonic CP Violation by Low Energy Neutrino Oscillation Experiments
• Parameter Degeneracies in Neutrino Oscillation Measurement of Leptonic CP and T Violation
• Neutrino factory optimization for non-standard interactions
• Resolving Eight-Fold Neutrino Parameter Degeneracy by Two Identical Detectors with Different Baselines
• Probing Flavor Changing Neutrino Interactions Using Neutrino Beams from a Muon Storage Ring
• How sensitive is a neutrino factory to the angle ${\theta }_{13}$?
• Probing non-standard neutrino interactions with supernova neutrinos
• Probing Non-Standard Neutrino Interactions with Neutrino Factories
• Perturbation Theory of Neutrino Oscillation with Nonstandard Neutrino Interactions
• Discovery reach for non-standard interactions in a neutrino factory
• The MSW effect and Matter Effects in Neutrino Oscillations
• Resonant Conversion of Massless Neutrinos in Supernovae
• Effects of non-standard neutrino interactions on MSW-LMA solution to the solar neutrino problem
• Two modes of searching for new neutrino interactions at MINOS
• Beta-Beams: present design and expected performances
• Effects of non-standard interactions in the MINOS experiment
• CP violation in neutrino oscillations and new physics
• Effects of new physics in neutrino oscillations in matter
• Neutrino Oscillation and CP Violation
• Nonstandard neutrino-neutrino refractive effects in dense neutrino gases
• Search for Electron Neutrino Appearance in a 250 km Long-baseline Experiment
• Loop bounds on non-standard neutrino interactions
• Can ICARUS and OPERA ν_τ appearance experiments detect new flavor physics ?
• CP violation and the CKM matrix
• Non-standard interactions using the OPERA experiment
• Method for Determination of $|U_{e3}|$ in Neutrino Oscillation Appearance Experiments
• Reexamining nonstandard interaction effects on supernova neutrino flavor oscillations
• Solar Neutrino Measurements
• Can OPERA help in constraining neutrino non-standard interactions?
• Probing Nonstandard Neutrino Physics by Two Identical Detectors with Different Baselines
• Physics with near detectors at a neutrino factory
• Detectors and flux instrumentation for future neutrino facilities
• Supernova Bounds on Supersymmetric $R$-parity Violating Interactions
• Testing non-standard CP violation in neutrino propagation
• On in situ Determination of Earth Matter Density in Neutrino Factory
• Atmospheric Neutrinos
• CERN to Gran Sasso; An ideal distance for superbeam?
• Non-standard interaction effects on astrophysical neutrino fluxes
• Stellar Collapse Dynamics With Neutrino Flavor Changing Neutral Currents
• Matter Effect on Neutrino Oscillations from the violation of Universality in Neutrino Neutral Current Interactions
• Searching for New Physics in Future Neutrino Factory Experiments
• Flavor changing neutrino interactions and CP violation in neutrino oscillations
• Constraints on New Physics from Long Baseline Neutrino Oscillation Experiments
• Will MINOS see new physics?
• More on Non-standard Interaction at MINOS
• Neutrino's Non-Standard Interactions; Another Eel under a Willow?

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• General bounds on non-standard neutrino interactions
• Non standard neutrino interactions
• CP-Violating Neutrino Non-Standard Interactions in Long-Baseline-Accelerator Data
• Interpretation of MINOS data in terms of non-standard neutrino interactions
• Large-Theta(13) Perturbation Theory of Neutrino Oscillation for Long-Baseline Experiments
• Non-standard interactions and the CP phase measurements in neutrino oscillations at low energies
• Non-standard interactions with high-energy atmospheric neutrinos at IceCube
• On the Determination of Leptonic CP Violation and Neutrino Mass Ordering in Presence of Non-Standard Interactions: Present Status
• Non-Standard Interactions at a Neutrino Factory: Correlations and CP violation
• Search for Nonstandard Neutrino Interactions with IceCube DeepCore
• The Discovery reach of $CP$ violation in neutrino oscillation with non-standard interaction effects
• Sensitivity of T2KK to the non-standard interaction in propagation
• Implications of lepton flavour violation on long baseline neutrino oscillation experiments
• Enhancing Sensitivity to Non-Standard Neutrino Interactions at INO combining muon and hadron information
• Parameter Degeneracy in Neutrino Oscillation -- Solution Network and Structural Overview --
• Improving LMA predictions with non-standard interactions: neutrino decay in solar matter?
• Nonstandard interactions of tau neutrino via charged Higgs and $W^{\prime }$ contribution
• Biprobability approach to CP phase degeneracy from non-standard neutrino interactions
• Tau neutrino as a probe of nonstandard interaction
• Constraints on the non-standard interaction in propagation from atmospheric neutrinos
• Neutrino Oscillations at low energy long baseline experiments in the presence of nonstandard interactions and parameter degeneracy
• Alleviating the present tension between T2K and NO$\nu$A with nonstandard neutrino interactions
• Geometric imprint of CP violation in two flavor neutrino oscillations
• EUROnu-WP6 2010 Report
• Detecting CP Violation in the Presence of Non-Standard Neutrino Interactions
• ${\delta }_{CP}$-free constraints on NSI parameters ${\epsilon }_{e\mu }$ and ${\epsilon }_{e\tau }$ using high-purity ${\nu }_{\mu }$ CC events at IceCube DeepCore
• Long baseline neutrino experiments, mass hierarchy and delta(CP)
• Neutrino oscillations: Inevitability of non-standard interactions or a sterile neutrino
• Improving LMA predictions with non standard interactions