Pith Number

pith:MGQTFC52

pith:2000:MGQTFC52IDRFA2GKHZVP6M5IAC

not attested not anchored not stored refs pending

The $\eta_c\gamma \gamma ^*$ transition form factor in the decay $\eta_c\to \gamma \ell^+\ell^-$ and in the crossed channels $\gamma e^-\to \eta_c e^- $ and $e^+e^-\to\eta_c\gamma

Egle Tomasi-Gustafsson, Elvio Di Salvo, Michail P. Rekalo

arxiv:hep-ph/0004112 v1 · 2000-04-12 · hep-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MGQTFC52IDRFA2GKHZVP6M5IAC}

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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.

Receipt and verification

First computed	2026-05-18T04:13:26.739726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61a1328bba40e25068ca3e6aff33a800af151cc9f45e688b51dd2c5873c1e6c1

Aliases

arxiv: hep-ph/0004112 · arxiv_version: hep-ph/0004112v1 · doi: 10.48550/arxiv.hep-ph/0004112 · pith_short_12: MGQTFC52IDRF · pith_short_16: MGQTFC52IDRFA2GK · pith_short_8: MGQTFC52

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/MGQTFC52IDRFA2GKHZVP6M5IAC \
  | 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: 61a1328bba40e25068ca3e6aff33a800af151cc9f45e688b51dd2c5873c1e6c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "669a1111b45552bb6346669196f65783f74f38f1b037337d1d2ba45a88c2b624",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-ph",
    "submitted_at": "2000-04-12T14:14:39Z",
    "title_canon_sha256": "520de4b6d70bffc0fba8fa6b857583dcb2401b2d475b119cf62b9c9f26632bfb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-ph/0004112",
    "kind": "arxiv",
    "version": 1
  }
}