Alleviating the present tension between T2K and NO$\nu$A with nonstandard neutrino interactions

Abstract

Since neutrino oscillation was observed, several experiments have been built to measure its parameters. NO$\nu$A and T2K are two long-baseline experiments dedicated to measuring mainly the mixing angle ${\theta }_{23}$, the charge-parity conjugation phase ${\delta }_{\mathrm{CP}}$, and the mass ordering. However, there is a tension in current data. The T2K allowed region is in conflict with the region allowed by NO$\nu$A. We propose a nonstandard charged current interaction (CC-NSI) in neutrino production to relieve this tension. The CC-NSI is computed through quantum field theory (QFT) formalism, where we derive perturbative analytical formulae considering CC-NSI in the pion decay. Within this new approach, we can alleviate NO$\nu$A and T2K tension for a CC-NSI complex parameters of order $10^{-3}$. We show the new phase has a degeneracy to the Dirac CP phase of the form ${\delta }_{\mathrm{CP}}\pm \varphi =1.5\pi$ being a possible source of violation of charge-parity symmetry.

arXiv commentAccepted for publication in PRD

References in corpus (44)

• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• The fate of hints: updated global analysis of three-flavor neutrino oscillations
• The T2K Experiment
• Simulation of long-baseline neutrino oscillation experiments with GLoBES
• 2020 Global reassessment of the neutrino oscillation picture
• New features in the simulation of neutrino oscillation experiments with GLoBES 3.0
• NuFit-6.0: Updated global analysis of three-flavor neutrino oscillations
• First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA
• Exploring Neutrino Mixing with Low Energy Superbeams
• CP Violation and Neutrino Oscillations
• First measurement of electron neutrino appearance in NOvA
• An Improved Measurement of Neutrino Oscillation Parameters by the NOvA Experiment
• Measurement of Reactor Antineutrino Oscillation Amplitude and Frequency at RENO
• First Double Chooz ${\theta }_{13}$ Measurement via Total Neutron Capture Detection
• Real Oscillations of Virtual Neutrinos
• Resolving Neutrino Mass Hierarchy and CP Degeneracy by Two Identical Detectors with Different Baselines
• Testing the statistical compatibility of independent data sets
• Ruling out four-neutrino oscillation interpretations of the LSND anomaly?
• Measurements of neutrino oscillation parameters from the T2K experiment using $3.6\times 10^{21}$ protons on target
• Improved constraints on neutrino mixing from the T2K experiment with $3.13\times 10^{21}$ protons on target
• CP-Violating Neutrino Non-Standard Interactions in Long-Baseline-Accelerator Data
• Non-standard neutrino interactions as a solution to the NO$\nu$A and T2K discrepancy
• Probing Non-Standard Neutrino Interactions with Neutrino Factories
• Large-Theta(13) Perturbation Theory of Neutrino Oscillation for Long-Baseline Experiments
• Back to (Mass-)Square(d) One: The Neutrino Mass Ordering in Light of Recent Data
• Reactor neutrino oscillations as constraints on Effective Field Theory
• EFT at FASER$\nu$
• Consistent QFT description of non-standard neutrino interactions
• Resolving CP Violation by Standard and Nonstandard Interactions and Parameter Degeneracy in Neutrino Oscillations
• Neutrino mass ordering obscured by non-standard interactions
• EFT analysis of New Physics at COHERENT
• NOvA and T2K: The race for the neutrino mass hierarchy
• Probing CP violation with T2K, NO$\nu$A and DUNE in the presence of non-unitarity
• Exploring SMEFT Induced Non-Standard Interactions from COHERENT to Neutrino Oscillations
• Non-standard interactions in SMEFT confronted with terrestrial neutrino experiments
• Very Light Sterile Neutrinos at NOvA and T2K
• A review of the tension between the T2K and NO$\nu$A appearance data and hints to new physics
• DUNE potential as a New Physics probe
• Expanding neutrino oscillation parameter measurements in NOvA using a Bayesian approach
• Unleashing the Power of EFT in Neutrino-Nucleus Scattering
• Violation of LGtI inequalities in the light of NO$\nu$A and T2K anomaly
• Tensions between the appearance data of T2K and NOvA
• Vector leptoquark $U_3$ and CP violation at T2K, NOvA experiments
• Hidden physics in pion and some other meson decays