Matter-Antimatter Asymmetry

For four flavour-symmetry cases, this paper maps heavy-neutrino lifetimes, decay flavour ratios, and the parameter space where leptogenesis works and colliders can test it.

arxiv:2412.10254 · hep-ph · 2024-12

Domain wall cores in the minimal Z2-symmetric singlet extension can restore electroweak symmetry and, while sweeping through space, could produce the matter-antimatter asymmetry in a parameter region far lighter and more testable than standard singlet EWBG.

arxiv:2412.10495 · hep-ph · 2024-12

A Z4-symmetric Dirac seesaw makes the imaginary part of a seesaw scalar a stable dark matter candidate and links its phenomenology to gravitational wave and CMB observables.

arxiv:2412.12267 · hep-ph · 2024-12

A three-Higgs-doublet inflation model with a complex coupling to gravity can produce a scalar matter-antimatter asymmetry that electroweak sphalerons convert into a baryon asymmetry.

arxiv:2412.12957 · hep-ph · 2024-12

A parameter-space scan shows that very large curvature-current couplings can fit the baryon asymmetry and dark matter abundance, while the electric charge of the black hole plays no role in the mechanism.

arxiv:2412.13254 · hep-ph · 2024-12

A seesaw model with spontaneously broken lepton number can simultaneously explain dark matter as a freeze-in Majoron and the baryon asymmetry through resonant leptogenesis, with one set of dimension-five operators controlling both.

arxiv:2412.14121 · hep-ph · 2024-12

Claims that Callan-Rubakov monopole catalysis biased by a tiny theta-term can generate the observed baryon asymmetry at T~100 GeV with monopole densities below current bounds.

arxiv:2412.14239 · hep-ph · 2024-12

An off-diagonal thermal potential from sterile neutrino self-interactions generates the baryon asymmetry at lower order in the Yukawa coupling, boosting it and relaxing the mass degeneracy required in vanilla ARS leptogenesis.

arxiv:2412.14044 · hep-ph · 2024-12

With one or two stiff kination epochs before radiation domination, vanilla leptogenesis can produce the observed baryon asymmetry while imprinting a blue-tilted gravitational-wave spectrum, leaving a small DECIGO-visible window.

arxiv:2608.09814 · hep-ph · 2026-08

A neutrinophilic two-Higgs-doublet model with Dirac neutrinos can generate the observed baryon asymmetry through finite-temperature 'forbidden' leptogenesis, favoring normal neutrino mass ordering and 0 < δ_CP < π.

arxiv:2412.18278 · hep-ph · 2024-12

An A4 modular left-right symmetric model can write down all seven allowed two-zero neutrino textures, but only classes B1, B2 and C pass the paper's oscillation, baryogenesis and 0νββ checks.

arxiv:2608.07623 · hep-ph · 2026-08

A two-component dark matter extension of the scotogenic model in which both dark matter particles participate in the CP violation that generates the observed baryon asymmetry at the TeV scale.

arxiv:2412.21202 · hep-ph · 2024-12

Axionic domain walls coupled to lepton number can generate the baryon asymmetry through spontaneous baryogenesis at collapse, but the associated gravitational wave signal is too faint for planned detectors.

arxiv:2501.00491 · hep-ph · 2024-12

A resonant leptogenesis framework with degenerate right-handed neutrino masses and a new TBC3 mixing ansatz is shown to fit neutrino data and reproduce the observed baryon asymmetry with m_N1 between 0.13 and 230 TeV.

arxiv:2608.06983 · hep-ph · 2026-08

A leptogenesis model generates the baryon asymmetry at the TeV scale through two-body decays of heavy right-handed neutrinos to lighter sterile neutrinos via a dimension-5 electromagnetic dipole operator, with implications for sterile neutrino dark matter and Neff.

arxiv:2501.13150 · hep-ph · 2025-01

The lightest neutral scalar of the SU(2)_R triplet in the minimal left-right model can serve as a long-lived decaying dark matter candidate in the keV to multi-MeV mass range, provided the left-right scale exceeds about 10^15 GeV via a severely fine-tuned quartic coupling.

arxiv:2501.14669 · hep-ph · 2025-01

No new result: the paper is an expository review of reheating, electroweak baryogenesis, and leptogenesis in early universe cosmology.

arxiv:2501.15543 · hep-ph · 2025-01

Complex lepton Yukawa couplings in a two Higgs doublet model that explain the R(D(*)) flavor anomalies can also source electroweak baryogenesis, yielding the observed baryon asymmetry under assumed strong first-order phase transition parameters.

arxiv:2502.00445 · hep-ph · 2025-02

An MFV leptoquark model shows that the CKM phase alone can in principle generate the observed baryon asymmetry without time-varying model parameters.

arxiv:2608.05269 · hep-ph · 2026-08

Standard-misalignment axions coupled to strong or weak sphalerons can produce the observed baryon asymmetry at GUT-scale decay constants, whereas the vanilla Majoron scenario is ruled out by late-time dilution.

arxiv:2608.05279 · hep-ph · 2026-08

Resonant leptogenesis from a 500 GeV doubly charged scalar in an extended Georgi-Machacek model can reproduce the observed baryon asymmetry, but the surviving parameter space pins the leptogenesis-active triplet VEV at or below 10^-2 GeV.

arxiv:2502.06729 · hep-ph · 2025-02

A supersymmetric model with approximate R-symmetry links the baryon asymmetry to a gravitino dark matter relic, predicting a 5 to 10 GeV gravitino and a multi-TeV sparticle spectrum.

arxiv:2502.07932 · hep-ph · 2025-02

In a two-heavy-neutral-lepton seesaw with large imaginary Casas-Ibarra angle, the cLFV matrices S and R become rank-one related, and the resulting baryon asymmetry vanishes at leading order.

arxiv:2502.07988 · hep-ph · 2025-02

A rotating axion, kicked into motion by a sign flip in its gravitational effective potential during kination, can co-generate baryon asymmetry and dark matter in a Majoron seesaw model.

arxiv:2502.08720 · hep-ph · 2025-02

BBN deuterium abundances exclude baryon-to-photon inhomogeneities above roughly 26-28% RMS, probing physics at temperatures up to a few TeV.

arxiv:2505.15904 · hep-ph · 2025-05

A proceedings review of the author's prior EFT calculation of neutrinoless double beta decay and of a two-sterile-neutrino model, containing no new derivation.

arxiv:2505.17750 · hep-ph · 2025-05

A compilation of six f(R,L_m) gravity studies that fit model parameters to cosmological data and interpret the fitted solutions as descriptions of late-time acceleration, a bouncing universe, and baryogenesis.

arxiv:2505.24470 · gr-qc · 2025-05

The paper speculates that an excess of heavy two-top-antiquark antibaryons in the early universe could have collapsed into black holes, explaining the baryon asymmetry.

arxiv:2506.16340 · hep-ph · 2025-06

Analytic CP asymmetry formulas from the Casas-Ibarra parametrization give minimum right-handed neutrino masses for successful leptogenesis, down to about 132 GeV with a neutrinophilic Higgs doublet and non-thermal production.

arxiv:2506.20580 · hep-ph · 2025-06

Thermal leptogenesis in minimal flipped SU(5) and SO(10) models tightly constrains their flavour parameters, yielding a lightest-neutrino mass below 0.03 eV and a B-L breaking scale near 10^12.5 GeV.

arxiv:2506.23117 · hep-ph · 2025-06

In the minimal flipped SU(5) model with radiative seesaw, successful thermal leptogenesis implies an upper limit on the lightest neutrino mass of about 3 x 10^-2 eV, testable at KATRIN.

arxiv:2506.23113 · hep-ph · 2025-06

A spectator scalar field coupled to the inflaton and to spacetime curvature yields a first-order correction to the baryon asymmetry in spontaneous baryogenesis, potentially enhancing it by orders of magnitude for small coupling g.

arxiv:2507.01112 · gr-qc · 2025-07

The paper builds a tribrid inflation model in SU(3)c x SU(2)L x SU(2)R x U(1)B-L with a left-handed triplet inflaton and shows benchmark points with r up to 0.005 that also fit neutrino masses and leptogenesis.

arxiv:2507.05564 · hep-ph · 2025-07

Adding 2HDM-type two-loop diagrams to the NMSSM electron EDM calculation tightens constraints on the CP-violating phase phi4 and changes the allowed parameter space for phi3, phi4, and phi5.

arxiv:2507.06320 · hep-ph · 2025-07

The paper asserts a unified scenario of preon supersymmetry, no-boundary cosmology, and Chern-Simons gravity without providing new derivations or quantitative predictions.

arxiv:2507.08057 · hep-ph · 2025-07

A single out-of-equilibrium decay chain of heavy vector-like fermions via electromagnetic dipole operators can simultaneously generate the baryon asymmetry and an asymmetric dark matter relic with mass around 1.9 proton masses.

arxiv:2507.11607 · hep-ph · 2025-07

Rényi entropy cosmology constrained by BBN: helium and deuterium allow overlapping λ ranges near 10^-85, lithium requires disjoint values, so the constant-λ model cannot solve the lithium problem.

arxiv:2507.14250 · physics.gen-ph · 2025-07

A systematic classification of how grand unified theory scalars violate baryon and lepton number, predicting a kaon-dominant proton decay pattern and mass bounds down to scales far below the GUT scale.

arxiv:2507.16605 · hep-ph · 2025-07

Matter is proposed to arise at the boundary where two types of nothing intersect, explaining why there is something rather than nothing.

arxiv:2508.10006 · physics.hist-ph · 2025-08

A Type-III seesaw model based on non-holomorphic modular symmetry fits NuFIT 6.0 neutrino data and produces baryogenesis via leptogenesis with Y_B-L about 1e-9.

arxiv:2508.05047 · hep-ph · 2025-08

A dark-sector electroweak baryogenesis model with a ~50 GeV fermionic dark matter candidate can simultaneously match the baryon asymmetry, the dark matter relic density, and (at ~2 sigma) the galactic center gamma-ray excess, and predicts observable gravitational waves.

arxiv:2508.06373 · hep-ph · 2025-08

With 10 and \overline{126} Higgs representations and no 120 in SO(10), parameter-space examples exist where leptogenesis yields Y_B = 8.50 x 10^-11, consistent with observation.

arxiv:2508.06714 · hep-ph · 2025-08

A U(1)_X extension with three right-handed neutrinos produces gravitational waves from its symmetry-breaking phase transition that LISA, DECIGO, BBO, or the Einstein Telescope could detect.

arxiv:2508.09835 · hep-ph · 2025-08

A review of electroweak baryogenesis that surveys the required new physics, the mounting experimental constraints, and gives a practical computational guide for predicting the baryon asymmetry.

arxiv:2508.09989 · hep-ph · 2025-08

A minimal SO(10) GUT with one CP source and 19 Yukawa parameters is claimed to fit fermion data and explain baryogenesis via N2-dominated leptogenesis.

arxiv:2508.14969 · hep-ph · 2025-08

A tuned HYDJET++ simulation describes STAR phi and Omega spectra well at high Au+Au collision energies but overproduces Omega at low energies, suggesting incomplete thermalization of multi-strange baryons.

arxiv:2508.15259 · hep-ph · 2025-08

In a supersymmetric Twin Higgs model, light scalars can keep electroweak symmetry broken at high temperature, and a special neutrino sector can suppress dark radiation to match CMB limits.

arxiv:2508.15894 · hep-ph · 2025-08

Evaporating primordial black holes, biased by a new gravitational interaction, can reproduce the observed baryon asymmetry once entropy dilution and chemical-potential-dependent emission are included.

arxiv:2508.21011 · hep-ph · 2025-08

Under multiverse assumptions, most habitability-condition combinations are incompatible with our observed constants, and flexible GUTs, freeze-out dark matter with high-energy baryogenesis, and some galactic disruption and origin-of-life scenarios are disfavored.

arxiv:2509.08220 · astro-ph.CO · 2025-09

In the BNT neutrino-mass model, thermal leptogenesis can explain the observed baryon asymmetry with triplet masses above roughly 3.5e7 GeV in the hierarchical case and as low as 1.7 TeV with resonant enhancement.

arxiv:2608.01890 · hep-ph · 2026-08

A U(1)_{B-L} flaton decay chain can produce both a large positive electron-neutrino asymmetry and the observed baryon asymmetry, with values matching EMPRESS and BBN for a symmetry-breaking scale around 10^10 GeV.

arxiv:2509.13098 · hep-ph · 2025-09

Baryogenesis can proceed via CP-violating inflaton decays that imprint an asymmetry in an inert Higgs doublet, which decays into Dirac neutrinos and is converted by sphalerons to the observed baryon asymmetry.

arxiv:2511.03794 · hep-ph · 2025-11

A rotating QCD axion dissipates kinetic energy via dark monopole dyon transitions, explaining dark matter and baryon asymmetry with a predicted axion decay constant below 10^9 GeV.

arxiv:2511.10603 · hep-ph · 2025-11

A Klein-bottle extra-dimensional topology creates a CP-violating fermion condensate wall; a brane crossing it produces particles and could seed leptogenesis.

arxiv:2511.23447 · hep-th · 2025-11

In the EMLG model, dipole-induced neutrino masses and the μ→eγ, electron EDM, and muon g−2 signals are all far below current experimental sensitivities in the BAU-compatible region.

arxiv:2512.10444 · hep-ph · 2025-12

The baryon asymmetry from a rolling pNGB field saturates as the initial misalignment angle approaches π, deviating from the small-angle cubic law.

arxiv:2512.11011 · hep-ph · 2025-12

Leptogenesis from U(1)_B-L breaking works down to M1 ~ 1.7e8 GeV thermally (~1e6 GeV non-thermally, ~TeV near-resonant), and cosmic-string gravitational waves can test part of this parameter space.

arxiv:2512.14684 · astro-ph.CO · 2025-12

A model with three right-handed neutrinos and a dark-matter portal generates the baryon asymmetry at a 2-TeV scale, but the benchmark used to match observations makes dark matter underabundant.

arxiv:2512.24032 · hep-ph · 2025-12

In the two-brane baryogenesis scenario, matching the observed baryon asymmetry requires a stochastic primordial magnetic field of order 10^10 T at the QCD epoch, and produces a white-noise baryon isocurvature spectrum far below CMB limits.

arxiv:2601.04828 · hep-ph · 2026-01

An entropy-clock chemical potential μ = ε d ln S/dt can generate the observed baryon asymmetry during reheating if εΠ_eff ≈ few×10⁻³ at overlap temperature T_ov ~ 10¹² GeV.

arxiv:2601.06302 · hep-ph · 2026-01

Dimension-7 lepton-number-violating operators can make B→Kνν and K→πνν observable only in flavor-hierarchical scenarios (first lepton generation decoupled) or with a cutoff near 100-200 GeV; otherwise baryon washout and 0νββ kill the signal.

arxiv:2601.16422 · hep-ph · 2026-01

A fourth-generation model is claimed to yield the observed baryon asymmetry η_B ≈ 10^-10, but the derivation sets the matching scale equal to the t' quark mass while also adopting a value about nine times smaller.

arxiv:2601.21374 · hep-ph · 2026-01

Resonant electromagnetic leptogenesis from TeV-scale neutrino dipole operators can reach the observed baryon asymmetry, but only with tuned mass splittings and diluted overproduction.

arxiv:2603.01652 · hep-ph · 2026-03

Leptogenesis can work with reheating temperatures as low as ~1 GeV for steep inflaton potentials (n=4,6), because right-handed neutrino production stops before sphaleron freeze-out, making the final asymmetry independent of T_rh for n=4.

arxiv:2607.09282 · hep-ph · 2026-07

Gravitational baryogenesis in Starobinsky and Odintsov–Oikonomou f(R) inflation yields η≈(1.05–1.53)×10⁻¹¹ at M*=M_Pl, matching the observed 8.65×10⁻¹¹ only for M*≈0.4 M_Pl.

arxiv:2602.19075 · astro-ph.CO · 2026-02

Three non-SUSY A5-prime modular inverse-seesaw models fit neutrino oscillation data and can generate the observed baryon asymmetry via TeV-scale resonant leptogenesis.

arxiv:2603.19104 · hep-ph · 2026-03

A 300 GeV right-handed W boson with opposite-sign mixing for antiparticles is claimed to explain neutron-decay anomalies, neutral-meson CP violation, and baryon asymmetry, but the derivation and numerics are internally inconsistent.

arxiv:2605.15771 · hep-ph · 2026-05

A derivative-coupled axion-like inflaton can produce the heavy right-handed neutrinos whose decays explain the observed baryon asymmetry, with the required CP violation lower in the prompt-decay regime.

arxiv:2607.13592 · hep-ph · 2026-07

In a quasiparticle kinetic model, expansion-induced momentum anisotropy reduces shear and bulk viscosities of baryon-asymmetric QCD matter, while baryon asymmetry increases them.

arxiv:2607.18581 · hep-ph · 2026-07

A non-holomorphic modular A4 seesaw model yields quasi-degenerate right-handed neutrinos, enabling resonant leptogenesis at ~10^6 GeV and a double-peaked gravitational-wave signature.

arxiv:2607.18803 · hep-ph · 2026-07

An energy-dependent 'rainbow' modification of spacetime can turn a baryon-symmetric scalar field state into a nonzero baryon-to-photon ratio of the observed size without supersymmetry.

arxiv:2607.22252 · gr-qc · 2026-07

Gravitational baryogenesis in a rainbow-gravity-corrected 4D Gauss-Bonnet model can in principle produce Y_B ~ 10^-10 during radiation domination, but only by fitting seven free parameters and using the effective theory above its cutoff.

arxiv:2607.25491 · gr-qc · 2026-07

A three-loop inverse scotogenic seesaw with residual Z2⊗Z3 yields viable multi-component dark matter and approximate resonant leptogenesis while fitting neutrino and CLFV bounds.

arxiv:2607.24932 · hep-ph · 2026-07

A single Froggatt-Nielsen effective theory with three right-handed neutrinos can simultaneously generate flavor hierarchies, dark matter, and the baryon asymmetry via thermal leptogenesis in both freeze-in and freeze-out regimes.

arxiv:2603.05372 · hep-ph · 2026-03

Quark-philic flavored dark matter realizes conversion-driven baryogenesis via CP-violating mediator conversions, yielding viable DM masses up to ~1.2 TeV and long-lived-particle LHC signatures.

arxiv:2607.11147 · hep-ph · 2026-07

The littlest inverse seesaw model can reproduce the observed baryon asymmetry via resonant or ARS leptogenesis in sizable parameter regions without extra free parameters.

arxiv:2603.21182 · hep-ph · 2026-03

Out-of-equilibrium decays of heavy vector-like fermions in an extended type-I Dirac seesaw can simultaneously generate the observed baryon asymmetry and asymmetric dark matter for 100 MeV to 39 TeV dark-matter masses.

arxiv:2603.24693 · hep-ph · 2026-03

CP-violating SU(2)_L quintuplets or septuplets at O(1) TeV can produce the observed baryon asymmetry through sphalerogenesis while remaining consistent with current electron EDM bounds.

arxiv:2604.00649 · hep-ph · 2026-04

A flipped vacuum manifold for a non-minimally coupled spectator ALP generates both baryon asymmetry through spontaneous baryogenesis and cold dark matter from later oscillations when ξ ∼ (f/m_P)^{2}.

arxiv:2607.03085 · hep-ph · 2026-07

Standard non-thermal leptogenesis works at arbitrarily low reheating temperatures above the BBN bound when the inflaton potential has a quartic minimum (k≥4), because the inflaton's evolving mass kinematically shuts off RHN production early.

arxiv:2607.08663 · hep-ph · 2026-07

Particle cosmology integrates particle physics with cosmology to interpret the early universe as a natural high-energy laboratory and explain phenomena via theories like inflation, baryogenesis, and dark matter.

arxiv:2606.31812 · hep-ph · 2026-06

In f(R, G_{\mu\nu}T^{\mu\nu}) gravity, gravitational baryogenesis produces a baryon-to-entropy ratio compatible with observations, and chi-square fits to H(z) and \mu(z) data match \Lambda CDM performance.

arxiv:2605.14377 · gr-qc · 2026-05

A gauged SO(3) flavour symmetry broken at multiple scales generates SM fermion masses, redistributes a lepton asymmetry into baryon and dark matter asymmetries via sphalerons, and yields dark matter as bound states of a confining SU(3), with mirror fermions required for anomaly cancellation.

arxiv:2605.20336 · hep-ph · 2026-05

A four-body decay of a new scalar via off-shell right-handed neutrinos generates sufficient CP asymmetry to explain the observed baryon asymmetry in two cosmological scenarios.

arxiv:2605.24163 · hep-ph · 2026-05

A multiverse cosmological selection mechanism in an SM extension with scalar singlet and RH neutrinos under B-L dynamically fixes the EW scale while addressing neutrino masses, leptogenesis, and dark matter.

arxiv:2605.28728 · hep-ph · 2026-05

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

arxiv:2605.31454 · hep-ph · 2026-05

New BSMPT implementation of baryon asymmetry computation using WKB transport equations with moment truncations and VEV profile solving, validated in the C2HDM with uncertainty and GW interplay analysis.

arxiv:2606.04229 · hep-ph · 2026-06

Inverse-seesaw U(1)_{B-L} model correlates leptogenesis, Majorana DM relic density, and neutrino masses with collider signatures in dilepton and single-lepton channels.

arxiv:2606.11517 · hep-ph · 2026-06

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.

arxiv:2606.22642 · hep-ph · 2026-06

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.

arxiv:2606.24277 · hep-ph · 2026-06

Three right-handed neutrinos below the electroweak scale can explain both neutrino masses and baryon asymmetry, with GeV-scale masses testable in B meson decays at the LHC using argon collisions for improved sensitivity.

arxiv:1906.11869 · hep-ph · 2019-06

The report describes the design and goals of DUNE, Hyper-Kamiokande, and PINGU for advancing neutrino flavor physics measurements.

arxiv:1907.02840 · hep-ex · 2019-07

Torsion in spacetime causes matter and antimatter to have different dispersion relations and masses that grow with density, so antimatter is preferentially captured by primordial black holes, explaining the matter-antimatter asymmetry.

arxiv:2101.04212 · gr-qc · 2021-01

Flavor projection effects in density-matrix equations permit misaligned asymmetry components from N2 and N3 to survive N1 washout in hierarchical seesaw leptogenesis, dividing parameter space into four regimes under low-energy neutrino constraints.

arxiv:2503.10366 · hep-ph · 2025-03

Low-scale leptogenesis becomes viable in the neutrino seesaw framework when a first-order electroweak phase transition allows sphalerons to convert lepton asymmetry into baryon asymmetry at temperatures below the Standard Model decoupling point.

arxiv:2504.03837 · hep-ph · 2025-04

Several one-zero neutrino textures remain compatible with oscillation data and generate the baryon asymmetry via resonant Type-II leptogenesis with flavor-resolved Boltzmann evolution.

arxiv:2605.15948 · hep-ph · 2026-05

Non-minimal gravity couplings in spontaneous baryogenesis produce a baryon asymmetry matching observations via enhanced inflaton decays, while adding a spectator field boosts the effect but leaves it short of experimental values.

arxiv:2605.16212 · hep-ph · 2026-05

ULYSSES v3 extends an open-source Python toolkit to numerically solve leptogenesis equations in resonant low-scale and high-scale regimes with updated interfaces and cross-checks.

arxiv:2605.16540 · hep-ph · 2026-05

Spontaneous wash-in leptogenesis in Type II Seesaw with Majoron pNGB background enables baryon asymmetry generation alongside dark matter cogenesis for specific v_T, v_sigma and m_j ranges.

arxiv:2506.23290 · hep-ph · 2025-06

In an E6-derived ψ'SM extension, a singlet fermion acts as freeze-in dark matter with relic density set by scalar decays for masses from a few MeV to hundreds of GeV, while type-I seesaw neutrinos simultaneously produce the observed baryon asymmetry via leptogenesis.

arxiv:2507.01895 · hep-ph · 2025-07