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Open research questions in Neutrino Physics Research

121 unresolved questions extracted from the limitations and future-work sections of 294 Neutrino Physics Research papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Resolving the issue of exceptional points and their impact on coarse-grained transport proposals. Further leveraging of flavor-wave dynamical characteristics to improve existing coarse-grained transport proposals. Investigating the application of the concepts developed in this study to other astrophysical contexts.

    Dynamical equilibria of fast neutrino flavor conversion · 2026 · DOI

  • The result is relational: an active deficit alone is insufficient, and a local heavy excess alone is insufficient.

    Heavy-State Active Closure and CLFV Extension of the Neutrino Standing-Carrier Space · 2026 · DOI

  • With new experiments such as DUNE (the Deep Underground Neutrino Experiment) and Hyper-Kamiokande, and ideas such as neutrino factories, the next generation of beams will address open questions about neutrino mass ordering, CP violation, and possible physics beyond the Standard Model.

    Accelerator-Based Neutrino Beams · 2026 · DOI

  • The determination of the absolute neutrino mass scale remains a fundamental open question in particle physics, with profound implications for both the standard model and cosmology.

    Most Stringent Bound on Electron Neutrino Mass Obtained with a Scalable Low-Temperature Microcalorimeter Array · 2025 · DOI

  • This task is made all the more difficult when it is necessary to evolve the neutrino component of the radiation field and associated quantum-mechanical property of flavor in order to model the astrophysical system of interest—a numerical challenge that has not been addressed to this day.

    Two-moment Neutrino Flavor Transformation with Applications to the Fast Flavor Instability in Neutron Star Mergers · 2024 · DOI

  • Testing the USP resonance-filter picture using IceCube high-energy neutrino samples, KM3NeT extreme-energy candidate events, ANITA candidate ultra-high-energy air-shower and neutrino-like events, and Auger neutrino limits. Investigating path dependence, environment sensitivity, and detector asymmetry in ultra-high-energy neutrino observations.

    Ultra-High-Energy Neutrinos as Weak Escape Modes: Environmental Resonance Filtering in USP Field Theory · 2026 · DOI

  • The gap between standard neutrino production or oscillation theory and the observation of ultra-high-energy neutrinos. The need for a compact interpretive framework linking extreme-energy neutrino observations to USP concepts.

    Ultra-High-Energy Neutrinos as Weak Escape Modes: Environmental Resonance Filtering in USP Field Theory · 2026 · DOI

  • Further study on the flavor problem is needed to understand the origin of particle mixing and the hierarchy of fermion mass. The approach can be used to explore the implications of the neutrino mass scale for particle physics. The results can be applied to understand the neutrino mass scale and its implications for cosmology.

    Neutrino mass mechanisms from a nonstandard higgs lagrangian and implications for flavor hierarchies · 2026 · DOI

  • The origin of the neutrino mass is a puzzling problem in particle physics. The standard model requires no fine-tuning of parameters and no widely separated scale in the dimensionless ratios constructed from the parameters in the theory.

    Neutrino mass mechanisms from a nonstandard higgs lagrangian and implications for flavor hierarchies · 2026 · DOI

  • The ordering of the neutrino mass spectrum is still unknown. The value of the Dirac CP-violating phase δ is still unknown.

    Terrestrial matter effects on reactor antineutrino oscillations: constant vs. fluctuated density profiles · 2026 · DOI

  • The study assumes matter density can be described by piecewise-constant profiles with moderate segmented fluctuations (±10%), which may not capture all complex geological structures along the JUNO baselines.

    Terrestrial matter effects on reactor antineutrino oscillations: constant vs. fluctuated density profiles · 2026 · DOI

  • The standard model does not consider carrying internal information. Previous studies have not addressed the concept of internal information loss during neutrino oscillation.

    Oscillation-Based Neutrino Information: Indirect Measurement of Internal Information Loss · 2026 · DOI

  • Future research should consider the impact of other detectors within the DUNE-ND complex on the search for neutrino polarizability. The study suggests exploring other models of New Physics that can generate large neutrino polarizability effects.

    Searching for neutrino polarizability at DUNE · 2026 · DOI

  • The gap is the lack of studies on neutrino polarizability at DUNE. The study addresses the need for a sensitivity analysis of DUNE's near detector to neutrino polarizability.

    Searching for neutrino polarizability at DUNE · 2026 · DOI

  • The paper suggests that future research should focus on testing the predictions of the Superlight framework. The paper suggests that future research should investigate the implications of the proposed substrate-level coherence field for our understanding of the structure of physical reality.

    Superlight as the Missing Substrate: Interpreting CoDEx 2026 and Muon g-2 Through a Unified Coherence Framework · 2026 · DOI

  • The paper identifies a gap in our understanding of the structure of physical reality, particularly with regards to the muon g-2 anomaly and the slow-mode coherence observed in various domains. The paper identifies a need for a unifying principle that can explain these phenomena.

    Superlight as the Missing Substrate: Interpreting CoDEx 2026 and Muon g-2 Through a Unified Coherence Framework · 2026 · DOI

  • Further study of the triadic texture and its predictions. Further study of the flavour model realisation of the texture using two distinct vacuum alignment configurations in two distinct bases. Further study of the constraints on the allowed channels of charged lepton flavour violation and baryon asymmetry generation through conventional leptogenesis.

    The Triadic Texture: Neutrino Predictions, Viable Vacuum, and Phenomenological Constraints · 2026

  • The Standard Model of Particle Physics is insufficient to explain neutrino masses and mixing. There is a need for a minimal and predictive neutrino mass matrix texture for Majorana neutrino.

    The Triadic Texture: Neutrino Predictions, Viable Vacuum, and Phenomenological Constraints · 2026

  • The emerging tension between CMB and DESI BAO data poses a challenge to the ΛCDM model. The discrepancy between CMB and DESI BAO measurements originates from the mismatch in the fractional matter density parameter Ω m and in the combination of the Hubble constant and the sound horizon at baryon drag H 0 r d.

    Recoupled Dark Radiation reconciling CMB and DESI BAO measurements · 2026

  • The paper suggests that future research should focus on determining the scale of the sub-leading corrections required to explain the reactor angle, solar mass splitting, and PMNS CP phase. The paper also suggests that future research should test the paper's predictions, such as the normal mass ordering and the total neutrino mass sum.

    Neutrino Masses, Mixing, and the PMNS Structure in the Three-Plane Scaffold · 2026 · DOI

  • The neutrino sector poses two distinct challenges: why are the PMNS mixing angles large while the CKM angles are small, and why are neutrino masses so much smaller than charged lepton masses. The existing frameworks do not provide a satisfactory explanation for these challenges.

    Neutrino Masses, Mixing, and the PMNS Structure in the Three-Plane Scaffold · 2026 · DOI

  • A detailed investigation of misclassifications in the high-sensitivity settings. A multi-algorithm simulation to combine the 5-Tier algorithm with the CAL-X High Sensitivity configuration.

    Prospective validation of NeutrinoReview for LLM-assisted systematic review screening: an indoor air quality case study (supplementary material) · 2026 · DOI

  • The lack of prospective validation of NeutrinoReview. The need for a more efficient and accurate screening process in systematic reviews.

    Prospective validation of NeutrinoReview for LLM-assisted systematic review screening: an indoor air quality case study (supplementary material) · 2026 · DOI

  • The study of neutrino oscillations in alternative theories of gravity is an active area of research. The effects of torsion on neutrino propagation are not well understood.

    Spacetime torsion signatures in neutrino oscillation physics · 2026 · DOI

  • The testing of the framework's predictions at JUNO. The application of the Gudermannian brane-bulk correction to other areas.

    Paper CCLXXXII: The JUNO Δm² Ratio as a Forced Prediction — f_III from the e₇ Transit and the Gudermannian Brane–Bulk Correction · 2026 · DOI

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121 open questions have been extracted from the limitations and future-work passages of 294 Neutrino Physics Research papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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