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Open research questions in Neutrino Physics Research

135 gap statements mined from Neutrino Physics Research papers in our 7.9M-paper local library, which holds 664 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The lack of a realistic detector simulation for the ESSnuSB far detector. The need to study the sensitivity of the ESSnuSB far detector to supernova neutrinos.

    Study of Supernova Neutrinos at ESSnuSB · 2026 · DOI

  • There is a lack of understanding of the neutrino mass ordering and the Dirac phase δ. The current models for neutrino mixing are not precise enough to explain the latest experimental data. There is a need for new approaches to understand the neutrino mixing parameters.

    Modular <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi>TM</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>1</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> </mml:math> mixing in light of precision measurement in JUNO · 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 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 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 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

  • 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

  • This computation is the precise open problem; it is well-posed and accessible to a specialist in Poisson geometry or character varieties. The correct ratio requires off-diagonal MR structure (scaffold-internal open problem).

    Neutrino Masses, Mixing, and the PMNS Structure in the Three-Plane Scaffold · 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 block universe theory is often seen as a consequence of special relativity, but this is a misinterpretation. There is a need for an alternative understanding of time and the universe.

    Compton-Frequenz als Eigenzeit · 2026 · DOI

  • The computation of neutrino oscillation probabilities is a complex task. The approach needs to be fast and efficient to be useful for neutrino data analysis. The method needs to be able to handle varying-density media and beyond-Standard-Model phenomena.

    CHIC: Caley-Hamilton, invariants and constants for neutrino oscillation probabilities and gradients · 2026 · DOI

  • The calculation of the oscillation phases is restricted to the θ = π/2 equatorial plane. The weak-field approximation may not be valid in all cases. Experimental and wave-packet decoherence challenges need to be overcome.

    Effects of gravitational lensing on neutrino oscillation in Hu-Sawicki f(R) gravity · 2026 · 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 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 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 approach can be extended to other scenarios, such as varying-density media. The method can be used to study beyond-Standard-Model phenomena and additional sterile neutrinos.

    CHIC: Caley-Hamilton, invariants and constants for neutrino oscillation probabilities and gradients · 2026 · DOI

  • Further exploration of the parameter space of the models, - Investigation of the predictions of the models for other neutrino oscillation…

    Modular <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi>TM</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>1</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> </mml:math> mixing in light of precision measurement in JUNO · 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 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

  • 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 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

Most-cited papers in Neutrino Physics Research

Most recent work

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Open questions raised by papers listed on this page include: (1) The lack of a realistic detector simulation for the ESSnuSB far detector (“Study of Supernova Neutrinos at ESSnuSB”, 2026); (2) There is a lack of understanding of the neutrino mass ordering and the Dirac phase δ (“Modular <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"…”, 2026); (3) Further study on the flavor problem is needed to understand the origin of particle mixing and the hierarchy of fermion mass (“Neutrino mass mechanisms from a nonstandard higgs lagrangian and implications…”, 2026); (4) The ordering of the neutrino mass spectrum is still unknown (“Terrestrial matter effects on reactor antineutrino oscillations: constant vs.”, 2026); (5) Future research should consider the impact of other detectors within the DUNE-ND complex on the search for neutrino polarizability (“Searching for neutrino polarizability at DUNE”, 2026). 135 gap statements have been mined from Neutrino Physics Research papers in our 7.9M-paper local library, which holds 664 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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