Pith Number

pith:ZXZAZU73

pith:2026:ZXZAZU737H5KSDMASDK6QVJDKD

not attested not anchored not stored refs resolved

Near-Resonant Thermal Leptogenesis

Angus Spalding

Quasi-degenerate right-handed neutrinos produce the baryon asymmetry down to electroweak scales without resonance.

arxiv:2602.04772 v2 · 2026-02-04 · hep-ph · astro-ph.CO

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\usepackage{pith}
\pithnumber{ZXZAZU737H5KSDMASDK6QVJDKD}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

imposing the conservative non-resonance condition that the mass splitting must be much greater than the right-handed neutrino decay rates ΔM > 100Γ_i, yields the universal upper bound ε ≤ 1/200, independent of both the effective neutrino masses and the right-handed neutrino mass.

C2weakest assumption

The assumption that the imposed condition ΔM > 100Γ_i is sufficient to justify the perturbative expansion near degeneracy while still allowing enough asymmetry for successful leptogenesis; this choice of factor 100 is presented as conservative but directly controls the derived bound.

C3one line summary

Near-resonant thermal leptogenesis produces the observed baryon asymmetry for right-handed neutrino masses above 100 GeV without resonance, including during low-temperature reheating.

References

61 extracted · 61 resolved · 0 Pith anchors

[1] Bound on Reheating Temperature 22 C

[2] In the limitsM i ≫m D the seesaw relation is achieved. We adopt the Casas–Ibarra parametrisation of the Yukawa matrix, which allows us to express the neutrino Yukawa couplings in terms of low-energy n

[3] Rescaling Variables To make the Boltzmann equations numerically tractable it is convenient to introduce comoving variables that absorb the dilution factors due to the cosmic expansion. We define our p

[4] Fukuda et al 2001

[5] Fukuda et al 2002

Formal links

2 machine-checked theorem links

Cited by

1 paper in Pith

Linking Leptogenesis and Asymmetric Dark Matter: A Testable Framework for Neutrino Mass and the Matter-Antimatter Asymmetry

Receipt and verification

First computed	2026-05-17T23:39:04.473100Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cdf20cd3fbf9faa90d8090d5e8552350ccb2447162ecc604d99d08eb28dd2e3c

Aliases

arxiv: 2602.04772 · arxiv_version: 2602.04772v2 · doi: 10.48550/arxiv.2602.04772 · pith_short_12: ZXZAZU737H5K · pith_short_16: ZXZAZU737H5KSDMA · pith_short_8: ZXZAZU73

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ZXZAZU737H5KSDMASDK6QVJDKD \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: cdf20cd3fbf9faa90d8090d5e8552350ccb2447162ecc604d99d08eb28dd2e3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83932bd3eb08ae68c3db58e515ddab7de4f0cddfc1ab20d3608bea8ba7191db3",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2026-02-04T17:07:46Z",
    "title_canon_sha256": "dcfe83500e6e249dfec997228a9799dcc935298ec2d29ef995eedfd6fc2716b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.04772",
    "kind": "arxiv",
    "version": 2
  }
}