Can nonstandard interactions jeopardize the hierarchy sensitivity of DUNE ?

Abstract

We study the effect of non-standard interactions (NSIs) on the propagation of neutrinos through the Earth matter and how it affects the hierarchy sensitivity of the DUNE experiment. We emphasize on the special case when the diagonal NSI parameter ${\epsilon }_{ee}=-1$, nullifying the standard matter effect. We show that, if in addition, CP violation is maximal then this gives rise to an exact intrinsic hierarchy degeneracy in the appearance channel, irrespective of the baseline and energy. Introduction of off-diagonal NSI parameter, ${\epsilon }_{e\tau }$, shifts the position of this degeneracy to a different ${\epsilon }_{ee}$. Moreover the unknown magnitude and phases of the off-diagonal NSI parameters can give rise to additional degeneracies. Overall, given the current model independent limits on NSI parameters, the hierarchy sensitivity of DUNE can get seriously impacted. However, a more precise knowledge on the NSI parameters, specially ${\epsilon }_{ee}$, can give rise to an improved sensitivity. Alternatively, if NSI exists in nature, and still DUNE shows hierarchy sensitivity, certain ranges of the NSI parameters can be excluded. Additionally, we briefly discussed the implications of ${\epsilon }_{ee}=-1$ (in the Earth) on MSW effect in the Sun.

6 pages, 4 figures

References in corpus (13)

• New features in the simulation of neutrino oscillation experiments with GLoBES 3.0
• Status of non-standard neutrino interactions
• General bounds on non-standard neutrino interactions
• Non-standard neutrino interactions in reactor and superbeam experiments
• Constraints on Oscillation Parameters from ${\nu }_e$ Appearance and ${\nu }_{\mu }$ Disappearance in NOvA
• Degeneracy between ${\theta }_{23}$ octant and neutrino non-standard interactions at DUNE
• Shedding light on LMA-Dark solar neutrino solution by medium baseline reactor experiments: JUNO and RENO-50
• Testing matter effects in propagation of atmospheric and long-baseline neutrinos
• Sensitivity of the T2HKK experiment to the non-standard interaction
• Ultra-Low-Energy Germanium Detector for Neutrino-Nucleus Coherent Scattering and Dark Matter Searches
• Reassessing the sensitivity to leptonic CP violation
• Nonmaximal neutrino mixing at NO$\nu$A from nonstandard interactions
• Is nonstandard interaction a solution to the three neutrino tensions?

Cited by in corpus (38)

• Current unknowns in the three neutrino framework
• Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects
• Neutrino Non-Standard Interactions: A Status Report
• CP-Violating Neutrino Non-Standard Interactions in Long-Baseline-Accelerator Data
• Physics with Beam Tau-Neutrino Appearance at DUNE
• On the Determination of Leptonic CP Violation and Neutrino Mass Ordering in Presence of Non-Standard Interactions: Present Status
• Neutrino non-standard interactions meet precision measurements of $N_{\mathrm{eff}}$
• Challenges posed by non-standard neutrino interactions in the determination of ${\delta }_{CP}$ at DUNE
• Correlations and degeneracies among the NSI parameters with tunable beams at DUNE
• A global analysis strategy to resolve neutrino NSI degeneracies with scattering and oscillation data
• Searches for new physics at the Hyper-Kamiokande experiment
• Exploring the effects of Scalar Non Standard Interactions on the CP violation sensitivity at DUNE
• Matter Density Profile Shape Effects at DUNE
• Future DUNE constraints on EFT
• Neutrino oscillations and Non-Standard Interactions
• Exploring NSI degeneracies in long-baseline experiments
• Imprints of scalar NSI on the CP-violation sensitivity using synergy among DUNE, T2HK and T2HKK
• CP-Violating and Charged Current Neutrino Non-standard Interactions in CE$\nu$NS
• Exploring the effect of Lorentz invariance violation with the currently running long-baseline experiments
• Distinguishing Non-Standard Interaction and Lorentz Invariance Violation at Protvino to Super-ORCA experiment
• Improvements on perturbative oscillation formulas including non-standard neutrino Interactions
• What measurements of neutrino neutral current events can reveal
• Optimal configuration of Protvino to ORCA experiment for hierarchy and non-standard interactions
• Nonstandard neutrino interactions and mu-tau reflection symmetry
• Biprobability approach to CP phase degeneracy from non-standard neutrino interactions
• A New Sensitivity Goal for Neutrino-less Double Beta Decay Experiments
• Impact of scalar NSI on the neutrino mass ordering sensitivity at DUNE, HK and KNO
• Searching for Axial Neutral Current Non-Standard Interactions of neutrinos by DUNE-like experiments
• Neutrino non-standard interactions as a portal to test flavour symmetries
• Non-standard interactions and neutrinos from dark matter annihilation in the Sun
• Neutrino Oscillations at low energy long baseline experiments in the presence of nonstandard interactions and parameter degeneracy
• Constraining nonstandard neutrino interactions at electron colliders
• Impact of Matter Density Profile Shape on Non-Standard Interactions at DUNE
• Revisiting Majorana Neutrino Textures in the Light of Dark LMA
• The effect of non-standard interactions and environmental decoherence at DUNE
• Towards First Detection of the Solar MSW Transition With JUNO
• Detecting CP Violation in the Presence of Non-Standard Neutrino Interactions
• The Sensitivity of DUNE in Presence of Off-Diagonal Scalar NSI Parameters