Pith Number

pith:4N3D7UBL

pith:2025:4N3D7UBLCJPF7VAV3BH5POUEKZ

not attested not anchored not stored refs resolved

Sweeping the pion chimney for axion-like particles with KOTO

Christiane Scherb, Dean J. Robinson, Reuven Balkin, Stefania Gori

KOTO data on six-photon kaon decays can set new limits on axion-like particles with masses near the neutral pion.

arxiv:2508.08402 v1 · 2025-08-11 · hep-ph

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\usepackage{pith}
\pithnumber{4N3D7UBLCJPF7VAV3BH5POUEKZ}

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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

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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

Novel limits on prompt axion-like particles (ALPs) in the hard-to-probe mass range near the neutral pion may be obtained from recasting K_L to 3 pi^0 to 6 gamma KOTO data to search for K_L to 2 pi^0 a to 6 gamma.

C2weakest assumption

The background from standard-model KL to 3 pi^0 decays can be controlled or subtracted sufficiently well in the six-photon final state, and the detector acceptance and reconstruction efficiency for the ALP signal are comparable to the background process so that meaningful limits can be extracted.

C3one line summary

Recasting KOTO KL to 3pi0 to 6gamma data yields novel limits on prompt ALPs near the pion mass via KL to 2pi0 a to 6gamma, with extensions to displaced decays for wider ALP masses.

References

14 extracted · 14 resolved · 6 Pith anchors

[1] Final Results from the KTeV Experiment on the Decay KL -> pi0 gamma gamma 2008 · arXiv:0805.0031

[2] S. Gori, G. Perez, and K. Tobioka, KOTO vs. NA62 Dark Scalar Searches, JHEP 08, 110, arXiv:2005.05170 [hep- ph] 2005

[3] Search for $K_L \!\to\! \pi^0 \nu \overline{\nu}$ and $K_L \!\to\! \pi^0 X^0$ Decays at the J-PARC KOTO Experiment 2019 · arXiv:1810.09655

[4] C. Lin et al. (KOTO), Search for the Pair Production of Dark Particles X with KL0 →XX, X→γγ, Phys. Rev. Lett. 130, 111801 (2023), arXiv:2209.11019 [hep-ex] 2023

[5] Probing CP and flavor violation in neutral kaon decays with ALPs 2025 · arXiv:2507.01947

Receipt and verification

First computed	2026-05-21T02:04:50.984658Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3763fd02b125e5fd415d84fd7ba845651193b5b93f837d802b8ce3c8b2d6fdf

Aliases

arxiv: 2508.08402 · arxiv_version: 2508.08402v1 · doi: 10.48550/arxiv.2508.08402 · pith_short_12: 4N3D7UBLCJPF · pith_short_16: 4N3D7UBLCJPF7VAV · pith_short_8: 4N3D7UBL

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/4N3D7UBLCJPF7VAV3BH5POUEKZ \
  | 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: e3763fd02b125e5fd415d84fd7ba845651193b5b93f837d802b8ce3c8b2d6fdf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b59e277724a0fba18adc3525916c2b478543601d0909bd58d59f833a5146c822",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2025-08-11T18:51:37Z",
    "title_canon_sha256": "e29f2509ec5d11cd76ce36a74c69468ea11b6d99853939326a9f2a865436adb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.08402",
    "kind": "arxiv",
    "version": 1
  }
}