Solar neutrinos enable self-calibration of the ν_e + 40Ar cross section to ≲2% in 9-15 MeV via known 8B flux, survival probability, and distinctive Fermi/Gamow-Teller angular distributions.
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NuFit-6.0: Updated global analysis of three-flavor neutrino oscillations
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We present an updated global analysis of neutrino oscillation data as of September 2024. The parameters $\theta_{12}$, $\theta_{13}$, $\Delta m^2_{21}$, and $|\Delta m^2_{3\ell}|$ ($\ell = 1,2$) are well-determined with relative precision at $3\sigma$ of about 13\%, 8\%, 15\%, and 6\%, respectively. The third mixing angle $\theta_{23}$ still suffers from the octant ambiguity, with no clear indication of whether it is larger or smaller than $45^\circ$. The determination of the leptonic CP phase $\delta_{CP}$ depends on the neutrino mass ordering: for normal ordering the global fit is consistent with CP conservation within $1\sigma$, whereas for inverted ordering CP-violating values of $\delta_{CP}$ around $270^\circ$ are favored against CP conservation at more than $3.6\sigma$. While the present data has in principle $2.5$--$3\sigma$ sensitivity to the neutrino mass ordering, there are different tendencies in the global data that reduce the discrimination power: T2K and NOvA appearance data individually favor normal ordering, but they are more consistent with each other for inverted ordering. Conversely, the joint determination of $|\Delta m^2_{3\ell}|$ from global disappearance data prefers normal ordering. Altogether, the global fit including long-baseline, reactor and IceCube atmospheric data results into an almost equally good fit for both orderings. Only when the $\chi^2$ table for atmospheric neutrino data from Super-Kamiokande is added to our $\chi^2$, the global fit prefers normal ordering with $\Delta\chi^2 = 6.1$. We provide also updated ranges and correlations for the effective parameters sensitive to the absolute neutrino mass from $\beta$-decay, neutrinoless double-beta decay, and cosmology.
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- abstract We present an updated global analysis of neutrino oscillation data as of September 2024. The parameters $\theta_{12}$, $\theta_{13}$, $\Delta m^2_{21}$, and $|\Delta m^2_{3\ell}|$ ($\ell = 1,2$) are well-determined with relative precision at $3\sigma$ of about 13\%, 8\%, 15\%, and 6\%, respectively. The third mixing angle $\theta_{23}$ still suffers from the octant ambiguity, with no clear indication of whether it is larger or smaller than $45^\circ$. The determination of the leptonic CP phase $\delta_{CP}$ depends on the neutrino mass ordering: for normal ordering the global fit is consistent
- dataset IO :m 3 = 0, m 1 = q |∆m2 31|, m 2 = q |∆m2 31|+ ∆m 2 21. (9) The observable related to the end point of the beta decay spectrum is [15] m2 β = X i |Uei|2m2 i ,(10) withU ei the PMNS matrix elements in the electron row. Using the recent JUNO results for the solar sector [97], together with the NuFIT 6.0 best-fit values for the re- maining oscillation parameters [98], we find for Eq. (10) and the sum of the neutrino masses: NO :m β = 8.85+0.59 −0.57 meV, X i mi = 58.79+1.07 −1.04 meV, IO :m β = 4
- background 5 500, [arXiv:2511.00157]. [77] M. Escudero and S. J. Witte,A CMB search for the neutrino mass mechanism and its relation to the Hubble tension, Eur. Phys. J. C80(2020), no. 4 294, [arXiv:1909.04044]. [78]Super-KamiokandeCollaboration, K. Bayset. al.,Supernova Relic Neutrino Search at Super-Kamiokande, Phys. Rev. D85(2012) 052007, [arXiv:1111.5031]. 21 [79]Super-KamiokandeCollaboration, H. Zhanget. al.,Supernova Relic Neutrino Search with Neutron Tagging at Super-Kamiokande-IV, Astropart. Phys.6
- background where the quantityεi can be expressed in terms of the Dirac masses of νi,miD, arising from the second term of Eq. (4.1a) - see Ref. [77]. Moreover, employing the ty pe I seesaw formula we can then obtain the light-neutrino mass matrix mν in terms of miD andMiN c . As a consequence, nTL can be nicely linked to low energy neutrino data. We take as inputs the rece ntly updated best-fit values [135] - cf. Ref. [77] - on the neutrino oscillation parameters includin g IceCube IC24 with Super Kamiokande
- dataset White, (2025), arXiv:2511.01779 [astro-ph.CO]. [167] I. Esteban, M. C. Gonzalez-Garcia, M. Maltoni, I. Martinez-Soler, J. P. Pinheiro, and T. Schwetz, JHEP12, 216 (2024), arXiv:2410.05380 [hep-ph]. [168] N. Palanque-Delabrouille, C. Y` eche, N. Sch¨ oneberg, J. Lesgourgues, M. Walther, S. Chaban- ier, and E. Armengaud, JCAP04, 038 (2020), arXiv:1911.09073 [astro-ph.CO]. [169] S. Alamet al.(eBOSS), Phys. Rev. D103, 083533 (2021), arXiv:2007.08991 [astro-ph.CO]. [170] C. D. Froggatt and H. B. Niel
- background somewhere, we will finally discover the new physics able to address the puzzle of the origin of matter in the universe (dark matter and matter-antimatter asymmetry) and the origin of neutrino masses. As stated in the figure, neutrinos might play an important role in addressing some of the cosmological anomalies and tensions. 2. Neutrino mass tension Neutrino oscillation experiments place a lower bound on the sum of neutrino masses [3] ∑︁ 𝑖 𝑚𝜈𝑖 ≥58 meV(95 % C.L.).(1) From cosmological observation
- method This data consists of 13.6×1020 POT in the neutrino mode. The target material is CH 2, and we use 14 logarithmically-spaced energy bins. The NOvA flux peaks around 2 GeV where resonance pro- duction dominates the cross section. To simulate NC events at DUNE, we follow the simu- lation framework from Ref. [41]. We adopt the Technical Design Report (TDR) configuration [13] with a 40 kton LArTPC far detector and a ND LAr fiducial volume of 67 t. The target is argon (18 protons, 22 neutrons per nucl
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Derives exact rational-plus-π² closed forms for every multipole coefficient α_ℓ in the neutrino collision kernel by rewriting the kernel as angular derivatives of a Yukawa potential and reducing the integrals via a first-order recurrence.
Restricting CP violation in the low-scale type-I seesaw with three right-handed neutrinos to the Dirac phase δ alone yields specific testable subregions of heavy-neutrino flavor mixings and permits low-scale leptogenesis to generate the observed baryon asymmetry even for O(10^{-5}) deviations from C
Visible inelasticity in starting tracks can statistically separate tau and muon neutrino events, yielding competitive sensitivity to the tau-to-muon flux ratio with current IceCube exposures.
Yukawa hierarchies are generated from powers of fully anarchic spurions in higher SU(2) and SU(3) flavor representations via progressive rank lifting through composite outer products, with explicit models and predictions for FCNCs and stochastic gravitational waves.
The number of massless fermion modes in latticized theory-space models equals the cardinality of the maximum matching in the bipartite graph of mass terms, with support given by the Dulmage-Mendelsohn decomposition.
Neutral-current events supply sensitivity to isovector NSI parameters that charged-current analyses suppress, enabling the first bounded long-baseline constraints and resolution of individual quark couplings when the two datasets are combined.
Thermal Resonant Leptogenesis produces the observed baryon asymmetry via a dominant thermal channel from Higgs decays and lepton-doublet coherences, without requiring quasi-degenerate sterile neutrinos.
Bubble collisions in a seesaw model produce right-handed neutrinos that source novel gravitational waves detectable by LISA, ET, and LVK while allowing the lightest RHN to explain dark matter or enable leptogenesis.
An exhaustive scan of Δ(96) Modular Littlest Seesaw models yields 35 viable residual-symmetry patterns with new fixed PMNS columns and sharp, testable predictions beyond TM1.
S3 and D4 3HDMs with an extra singlet RH neutrino realize discrete dark matter plus scoto-seesaw neutrino masses, fitting oscillation data under CP conservation.
One-loop threshold corrections in the minimal U(1)_{L_mu-L_tau} seesaw model break the tree-level two-zero minor structure, relaxing the lower bound on total neutrino mass and easing cosmological tension.
Detecting the cosmic neutrino background's dipole anisotropy via tritium capture requires ~10^5 times the exposure needed for flux detection, with Majorana neutrinos suffering an additional (m_ν/T_ν)^2 suppression.
Concurrence minima in neutrino oscillations identify low-entanglement energy regions that, when aligned with NOνA and T2K data, yield tighter joint constraints on sin²θ₂₃, δ_CP, and Δm²₃₁.
Quantum Fisher information matrix is derived for neutrino flavor states to obtain Cramér-Rao bounds on oscillation parameters for reactor and accelerator experiments.
Octonionic Cl(6) flavor structure yields φ12 = -2χ for quarks and real lepton amplitudes unless identity-flavor plane mixing occurs.
Damped oscillations alleviate LN violation suppression for pseudo-Dirac HNLs, improving collider sensitivities and allowing distinction from the double-Majorana limit.
36 viable non-holomorphic S'4 modular models for leptons are identified via numerical scans, with two yielding successful unflavored thermal leptogenesis from the real part of τ while fitting neutrino data.
In Gaussian wave-packet QFT, flavor oscillations switch on only after a propagation-time threshold set by the wave-packet energy uncertainty and the intermediate particle's decay width; below it the neutrino is purely virtual.
DESI DR2 data constrain the neutrino mass sum below the inverted hierarchy minimum, yielding Bayes factor K>460 for normal hierarchy in standard cosmology.
Correlated HNL discovery at SHiP and flavor ratio shifts in astrophysical neutrinos at telescopes would establish neutrinos as Majorana fermions.
A nonholomorphic T' modular model realizes the T4-2-i one-loop topology for radiative Majorana neutrino masses, forbids tree-level seesaws via modular assignments, stabilizes DM with residual Z2, and fits oscillation data plus DM constraints for both hierarchies with fermionic DM.
Extends EFT formalism for neutrino oscillations with matter effects, derives analytical observables, and extracts first bounds on non-standard interaction parameters from JUNO dataset.
DNN analysis of pp → WR → ℓNR → ℓℓjj at LHC Run 2 and HL-LHC improves exclusion limits on m_WR and m_NR for unmixed, maximal-mixing, and PMNS-like scenarios over cut-based methods and probes the |Ve1|–|Vμ1| plane.
citing papers explorer
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Self-Calibration of the Neutrino-Argon Cross Section with Solar Neutrinos
Solar neutrinos enable self-calibration of the ν_e + 40Ar cross section to ≲2% in 9-15 MeV via known 8B flux, survival probability, and distinctive Fermi/Gamow-Teller angular distributions.
-
Self-interacting neutrinos in cosmological perturbation theory -- integrating the collision kernel
Derives exact rational-plus-π² closed forms for every multipole coefficient α_ℓ in the neutrino collision kernel by rewriting the kernel as angular derivatives of a Yukawa potential and reducing the integrals via a first-order recurrence.
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Dirac-Phase CP-Violation in the Low-Scale Type-I Seesaw with Three Right-Handed Neutrinos
Restricting CP violation in the low-scale type-I seesaw with three right-handed neutrinos to the Dirac phase δ alone yields specific testable subregions of heavy-neutrino flavor mixings and permits low-scale leptogenesis to generate the observed baryon asymmetry even for O(10^{-5}) deviations from C
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Visible inelasticity as a probe of tau flavor content of astrophysical neutrinos
Visible inelasticity in starting tracks can statistically separate tau and muon neutrino events, yielding competitive sensitivity to the tau-to-muon flux ratio with current IceCube exposures.
-
Hierarchies from Higher Flavor Spin
Yukawa hierarchies are generated from powers of fully anarchic spurions in higher SU(2) and SU(3) flavor representations via progressive rank lifting through composite outer products, with explicit models and predictions for FCNCs and stochastic gravitational waves.
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Graph-theoretic determination of massless modes in latticized theory-space models
The number of massless fermion modes in latticized theory-space models equals the cardinality of the maximum matching in the bipartite graph of mass terms, with support given by the Dulmage-Mendelsohn decomposition.
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Complementarity Between Neutrino Neutral and Charged Current Events in the Search for New Physics
Neutral-current events supply sensitivity to isovector NSI parameters that charged-current analyses suppress, enabling the first bounded long-baseline constraints and resolution of individual quark couplings when the two datasets are combined.
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Dominant Thermal Resonant Mechanism for Low-Scale Leptogenesis
Thermal Resonant Leptogenesis produces the observed baryon asymmetry via a dominant thermal channel from Higgs decays and lepton-doublet coherences, without requiring quasi-degenerate sterile neutrinos.
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Cosmic Collider Gravitational Waves sourced by Right-handed Neutrino production from Bubbles: Testing Seesaw, Leptogenesis and Dark Matter
Bubble collisions in a seesaw model produce right-handed neutrinos that source novel gravitational waves detectable by LISA, ET, and LVK while allowing the lightest RHN to explain dark matter or enable leptogenesis.
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Lepton mixing from the $\Delta(96)$ Modular Littlest Seesaw
An exhaustive scan of Δ(96) Modular Littlest Seesaw models yields 35 viable residual-symmetry patterns with new fixed PMNS columns and sharp, testable predictions beyond TM1.
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Neutrino Masses and Dark Matter Stability in 3HDMs with Minimal Non-Abelian Discrete Symmetries
S3 and D4 3HDMs with an extra singlet RH neutrino realize discrete dark matter plus scoto-seesaw neutrino masses, fitting oscillation data under CP conservation.
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Radiative Breaking of Two-Zero Neutrino Mass Minors: Revisiting the $\mathrm{U}(1)_{L_\mu-L_\tau}$ Model
One-loop threshold corrections in the minimal U(1)_{L_mu-L_tau} seesaw model break the tree-level two-zero minor structure, relaxing the lower bound on total neutrino mass and easing cosmological tension.
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Pathways and impediments towards a detection of the relic neutrino wind
Detecting the cosmic neutrino background's dipole anisotropy via tritium capture requires ~10^5 times the exposure needed for flux detection, with Majorana neutrinos suffering an additional (m_ν/T_ν)^2 suppression.
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Quantum Information as a New Lens for Precision Neutrino Physics
Concurrence minima in neutrino oscillations identify low-entanglement energy regions that, when aligned with NOνA and T2K data, yield tighter joint constraints on sin²θ₂₃, δ_CP, and Δm²₃₁.
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Revealing precision bounds on neutrino oscillation parameters with quantum estimation theory
Quantum Fisher information matrix is derived for neutrino flavor states to obtain Cramér-Rao bounds on oscillation parameters for reactor and accelerator experiments.
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Leptonic CP Conservation and the Quark CP Phase from Octonionic Flavor Structure
Octonionic Cl(6) flavor structure yields φ12 = -2χ for quarks and real lepton amplitudes unless identity-flavor plane mixing occurs.
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Lepton number violation at hadron colliders via pseudo-Dirac heavy neutral leptons
Damped oscillations alleviate LN violation suppression for pseudo-Dirac HNLs, improving collider sensitivities and allowing distinction from the double-Majorana limit.
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Non-holomorphic $S^{\prime}_{4}$ modular symmetry for leptons and leptogenesis
36 viable non-holomorphic S'4 modular models for leptons are identified via numerical scans, with two yielding successful unflavored thermal leptogenesis from the real part of τ while fitting neutrino data.
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Real and Virtual Propagation in Neutrino Oscillations
In Gaussian wave-packet QFT, flavor oscillations switch on only after a propagation-time threshold set by the wave-packet energy uncertainty and the intermediate particle's decay width; below it the neutrino is purely virtual.
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From Evidence to Evident: Decisive Cosmological Evidence for the Normal Neutrino Mass Hierarchy
DESI DR2 data constrain the neutrino mass sum below the inverted hierarchy minimum, yielding Bayes factor K>460 for normal hierarchy in standard cosmology.
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Are neutrinos Majorana? Fixed-target and high-energy astrophysical searches decide
Correlated HNL discovery at SHiP and flavor ratio shifts in astrophysical neutrinos at telescopes would establish neutrinos as Majorana fermions.
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Radiative Neutrino Mass in a Nonholomorphic $T'$ Modular Invariant Model
A nonholomorphic T' modular model realizes the T4-2-i one-loop topology for radiative Majorana neutrino masses, forbids tree-level seesaws via modular assignments, stabilizes DM with residual Z2, and fits oscillation data plus DM constraints for both hierarchies with fermionic DM.
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EFT for Neutrino Oscillations: Theory Developments and Application to JUNO
Extends EFT formalism for neutrino oscillations with matter effects, derives analytical observables, and extracts first bounds on non-standard interaction parameters from JUNO dataset.
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Probing lepton flavor mixing in $W_R$ searches with machine learning at the LHC
DNN analysis of pp → WR → ℓNR → ℓℓjj at LHC Run 2 and HL-LHC improves exclusion limits on m_WR and m_NR for unmixed, maximal-mixing, and PMNS-like scenarios over cut-based methods and probes the |Ve1|–|Vμ1| plane.
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A Minimal Dark $SU(2)$ Origin of a Massless Dirac Neutrino
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Towards Measuring the CP-Violating Phase with Atmospheric Neutrinos
Proposes a new up-down flux ratio for sub-GeV atmospheric neutrinos to measure δ_CP, potentially exceeding T2HK sensitivity near 90° and 270° at Hyper-Kamiokande.
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Effective Matter Flavor Conversion Mediated by Pseudo-Sterile States as the Possible Origin of Neutrino Oscillation Anomalies
A sterile neutrino with a novel density-dependent matter potential Vs resolves multiple oscillation anomalies when Vs is negative and mixing angles are small.
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Into the Gompverse: A robust Gompertzian reionization model for CMB analyses
A Gompertzian reionization model with three nuisance parameters demotes optical depth to a derived quantity, reducing its uncertainty by a factor of three and revealing potential neutrino mass tension in CMB analyses.
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Dirac one-loop seesaw in a non-invertible fusion rule
A one-loop Dirac neutrino mass model stabilized by a non-invertible fusion rule from Z3 x Z3' accommodates oscillation data and provides a viable bosonic dark matter candidate.
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Right-Handed Leptonic Mixing and Enhancement Band in Left-Right Symmetry
Parity in the Dirac leptonic sector of the minimal left-right model produces a branch-dependent enhancement band of large RH-LH mixing misalignment driven by small parity breaking and neutrino near-degeneracies.
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Why Quarks and Leptons Demand Different Symmetries: A Systematic $Z_3$ Froggatt-Nielsen Analysis
A Z3 Froggatt-Nielsen model with one flavon reproduces quark and charged lepton hierarchies but yields neutrino mass-squared ratios too small by two orders of magnitude and random PMNS angles.
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Lessons from the first JUNO results
JUNO's initial results combined with global data give a 2.2-2.3 sigma preference for normal neutrino mass ordering.
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Physical implications of a double right-handed gauge symmetry
A double right-handed U(1) gauge extension generates the Standard Model fermion mass hierarchy at tree and loop levels and stabilizes a viable scalar singlet dark matter particle consistent with relic density and direct detection bounds.
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Constraining axial non-standard neutrino interactions with MINOS and MINOS+
MINOS and MINOS+ neutral-current data yield world-leading bounds on axial NSI couplings ε^{Aq}_{eτ} and ε^{Aq}_{ττ} (including the isospin-singlet combination) for neutrinos interacting with u and d quarks.
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Shedding light on dark matter spikes through refractive neutrino masses
DUNE can set competitive bounds on refractive neutrino masses via supernova time-of-flight, with sensitivity significantly enhanced by galactic dark matter density spikes.
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Disentangle RG Running Parameters with Medium-Baseline Reactor Experiments
JUNO slow-mode data mildly prefer nonzero β_M1 (hinting Majorana neutrinos), while fast-mode RG shifts from β_D and β_M3 degrade mass-ordering sensitivity that TAO can restore.
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Exploring the interplay of late-time dynamical dark energy and new physics before recombination
Under standard recombination, phantom-crossing dynamical dark energy is preferred at ~97–98.5% probability; early-time fixes to the Hubble tension erase that preference while creating severe ω_m tension with CMB.
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Revisiting One-Zero and Two-Zero Neutrino Mass Textures in Light of Recent Oscillation and Cosmological Data
With CMB+BAO mass-sum bounds only A1/A2 two-zero textures survive; viable one-zero textures (via flow matching) predict distinct Σmi, ⟨mee⟩, and δCP patterns, realizable by non-invertible selection rules.
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Revisiting cLFV in "T1-2-A" scotogenic models: asymmetries in three-body lepton decays
A scotogenic model variant predicts observable charged-lepton-flavor-violating decay rates and measurable T/P asymmetries at future experiments, with tau-to-3mu asymmetries offering a falsification handle.
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Neutrino cuboid for normal mass ordering and tribimaximal flavor mixing
A cuboid mass ansatz that sets mass angles equal to mixing angles predicts a nearly degenerate normal spectrum whose deviations from tribimaximal mixing are fixed by the observed mass-squared ratio.
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Interplay of CPT-Violating and CPT-Conserving Lorentz Invariance Violation at DUNE
Combined CPT-violating and CPT-conserving Lorentz-invariance-violation parameters suppress DUNE's CP-violation sensitivity below 3σ over much of the δ_CP range and introduce parameter degeneracies that complicate δ_CP extraction.
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GPU-accelerated spectrum reweighting for new-physics searches in solar neutrino--electron scattering
A GPU-accelerated reweighting method speeds up likelihood evaluations for new-physics searches in neutrino-electron scattering by using precomputed spectra and response kernels.
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Multiparameter Quantum Estimation and Degeneracy Structure in Three-Flavor Neutrino Oscillations
The quantum Fisher information matrix applied to three-flavor neutrino oscillations reveals that probability degeneracies do not always imply quantum-state indistinguishability.
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Universal two-zero texture in SO(10): implications of JUNO and realization from non-invertible symmetries
Universal two-zero textures in SO(10) remain compatible with JUNO-era flavor data, prefer normal ordering, predict meV-scale mββ, and arise from Z3-gauged Z7 non-invertible selection rules.
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Diffuse Supernova Neutrinos with Secret Neutrino Interactions
Models scalar-mediated νSI on the DSNB in a full three-flavor PMNS framework for four coupling structures and projects 3σ sensitivities at JUNO, Hyper-Kamiokande-Gd, and DUNE reaching g∼10^{-8} for m_ϕ∼100-300 eV.
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Radiative Lifting of $\mathbb{Z}_3$ Domain-Wall Degeneracy in a Type-III Seesaw Model: Implications for Leptogenesis and Gravitational Waves
A Z3-symmetric Type-III seesaw model uses radiative Coleman-Weinberg effects to lift vacuum degeneracy and annihilate domain walls, fitting neutrino data, generating baryon asymmetry via leptogenesis at 10^9 GeV triplet masses, and predicting detectable gravitational waves.
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The Simplest Dirac Scoto-Seesaw Realization
A Dirac scoto-seesaw framework with chiral U(1)B-L charges (-4,-4,5) generates atmospheric neutrino mass at tree level and solar mass radiatively, stabilizes dark matter with residual Z6, and suppresses Z' dilepton decays.
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Constraints on the Sum of Neutrino Masses from ACT DR6 and DESI DR2 Considering Isocurvature Initial Conditions
Including neutrino density isocurvature in fits to ACT DR6, DESI DR2, and DES data yields ∑m_ν < 0.057 eV at 95% CL in ΛCDM with no detection of the isocurvature mode.
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Electron-muon colliders at high energies to discover heavy sterile neutrinos
Calculations of cLFV cross sections in eμ scattering show the e−μ+ → W+W− channel at √s > 2MW offers better prospects for detecting heavy sterile neutrinos than the quartically suppressed e−μ+ → e+μ− process.
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Neutrino mass ordering from the next Galactic supernova at DUNE, HK, and JUNO
Neutronization burst and accretion-phase rise-time observables from a 10 kpc core-collapse supernova enable DUNE, HK and JUNO to discriminate neutrino mass ordering at 3-6 sigma using multiple progenitor simulations.