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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representative citing papers
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.
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.
The universal two-zero texture in SO(10) fits flavor data with seven parameters, prefers normal neutrino ordering, predicts Dirac-phase regions and meV-scale m_beta beta, and arises from Z_3 gauging of Z_N (minimal N=7) without extra low-energy fields.
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.
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.
Proposes e+e- to N N-bar to ell+ ell+ 4j signatures at FCC-ee in minimal linear seesaw yielding O(10^3) events with negligible SM background to probe LNV and neutrino mass ordering.
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.
A minimal dark SU(2)_D model with anomaly cancellation and Z4 symmetry generates a rank-two Dirac neutrino mass matrix enforcing one exactly massless neutrino.
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.
A sterile neutrino with a novel density-dependent matter potential Vs resolves multiple oscillation anomalies when Vs is negative and mixing angles are small.
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.
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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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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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Universal two-zero texture in SO(10): implications of JUNO and realization from non-invertible symmetries
The universal two-zero texture in SO(10) fits flavor data with seven parameters, prefers normal neutrino ordering, predicts Dirac-phase regions and meV-scale m_beta beta, and arises from Z_3 gauging of Z_N (minimal N=7) without extra low-energy fields.
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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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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 number violation at FCC-ee
Proposes e+e- to N N-bar to ell+ ell+ 4j signatures at FCC-ee in minimal linear seesaw yielding O(10^3) events with negligible SM background to probe LNV and neutrino mass ordering.
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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
A minimal dark SU(2)_D model with anomaly cancellation and Z4 symmetry generates a rank-two Dirac neutrino mass matrix enforcing one exactly massless neutrino.
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Towards Measuring the CP-Violating Phase with Atmospheric Neutrinos
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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
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Dirac one-loop seesaw in a non-invertible fusion rule
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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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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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Probing Scalar Non-Standard Neutrino Interactions using High-Energy Astrophysical Neutrinos
IceCube astrophysical neutrino data is analyzed for flavor ratios and spectral shapes to constrain scalar non-standard neutrino interactions via induced pseudo-Dirac behavior.
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Disentangle RG Running Parameters with Medium-Baseline Reactor Experiments
RG running beta functions of mixing parameters alter the fast oscillation mode at JUNO and can reduce mass ordering sensitivity, but measurements from the TAO near detector can restore it by constraining the running parameters.
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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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Real and Virtual Propagation in Neutrino Oscillations
Derives an extended flavor-changing amplitude showing oscillations require propagation time above a threshold set by energy uncertainty and decay width, distinguishing real from virtual propagation.
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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.
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Rephasing invariant CP phases and sum rules in TM$_{1,2}$ mixing
CP phases φ1,2 in TM1,2 mixing equal rephasing invariants φ1 = -arg[U_e2 U_e3 U_μ1 U_τ1 / U_e1 det U] and φi = δ - arg[U_μi^0 U_τi^0].
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Leptonic CP Phase Determination from Fisher Information in NO$\nu$A and T2K
T2K and NOνA extract only a small fraction of the quantum information about δ_CP, with extraction efficiency particularly suppressed near maximal CP violation.
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Zee models with a non-invertible $Z_M$ symmetry
Zee models are classified under non-invertible Z_M symmetries; viable candidates are identified from data consistency, and a Z_7 benchmark yields numerical predictions for neutrino parameters and CLFV rates.
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Negative neutrino mass or negative dark energy?
A sign-switching dark energy model (Λ_s CDM) recovers positive effective neutrino masses (0.055 ± 0.050 eV) consistent with oscillation data, unlike ΛCDM which prefers negative values (-0.075 eV), for DESI DR2 + CMB + supernova fits with z_† > 2.4.
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The Majoron Cosmological Window: Dark Matter and Thermal Leptogenesis
The minimal majoron framework permits simultaneous majoron dark matter and thermal leptogenesis in a constrained cosmological window set by freeze-in production, warm dark matter bounds, and indirect detection limits.
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Exploring neutrino loss with diffuse astrophysical neutrino fluxes
IceCube diffuse neutrino data constrains neutrino loss from new physics via energy conservation, yielding bounds that vary with attenuation energy dependence and source redshift assumptions while potentially affecting spectral index fits.
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Quantum Correlations of Neutrinos in the Kerr-Newman Space-time
Neutrino quantum correlations in Kerr-Newman spacetime differ from Schwarzschild case, with black hole spin and charge modulating periods and amplitudes for radial and non-radial paths.
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Einstein-Cartan pseudoscalaron inflation, reheating and nonthermal leptogenesis
Einstein-Cartan pseudoscalaron inflation coupled to type-I seesaw neutrinos makes nonthermal leptogenesis a necessary mechanism for the baryon asymmetry, yielding ns ~ 0.97, r ~ 0.004 and nB/s ~ 8.7e-11 for gamma ~ -1/100 and lightest Majorana mass ~ 10^13 GeV.