Pith Number

pith:6MA3FD53

pith:2009:6MA3FD532BKHDNP3EXMD7IDVSK

not attested not anchored not stored refs pending

Photoproduction of $J/\psi$ in association with a $c\bar{c}$ pair

Kuang-Ta Chao, Rong Li

arxiv:0904.1643 v1 · 2009-04-10 · 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{6MA3FD532BKHDNP3EXMD7IDVSK}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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	2026-05-18T02:14:06.602146Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f301b28fbbd05471b5fb25d83fa075928e4ed6caa21c72b2af9b5ace34146ef2

Aliases

arxiv: 0904.1643 · arxiv_version: 0904.1643v1 · doi: 10.48550/arxiv.0904.1643 · pith_short_12: 6MA3FD532BKH · pith_short_16: 6MA3FD532BKHDNP3 · pith_short_8: 6MA3FD53

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/6MA3FD532BKHDNP3EXMD7IDVSK \
  | 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: f301b28fbbd05471b5fb25d83fa075928e4ed6caa21c72b2af9b5ace34146ef2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "659206b7cb3ae6163914198d1157641794d423dba4887e4e0b1671f5fdd28a0b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2009-04-10T06:26:07Z",
    "title_canon_sha256": "3bc85bc9dfb1b6a5279aa2f1ffba18b5f064b86526f9eb7d5a749a68a118d670"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1643",
    "kind": "arxiv",
    "version": 1
  }
}