Pith Number

pith:JOLBHGAF

pith:2026:JOLBHGAFQCLUXCUZBFTV7C5CKV

not attested not anchored not stored refs pending

The OPE-Regge Transition in $J/\psi$ Photoproduction

Arkadiy I. Syamtomov

Minimal eikonal unitarization reconciles leading-twist J/ψ photoproduction with data from threshold to HERA energies.

arxiv:2604.20247 v4 · 2026-04-22 · hep-ph

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\pithnumber{JOLBHGAFQCLUXCUZBFTV7C5CKV}

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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

A minimal eikonal unitarization of the amplitude, with an energy-dependent saturation scale fitted to HERA data, reconciles the convolution with the full W-range measurements while leaving the threshold description unchanged. Near threshold the dispersive real part dominates the cross section, anchored by the OPE subtraction constant M_ψN(0)≃36-39 GeV^{-2}.

C2weakest assumption

The assumption that the leading-twist OPE framework plus a minimal eikonal factor remains valid and unchanged near threshold, and that fitting the saturation scale to HERA data does not introduce uncontrolled systematics into the low-energy regime.

C3one line summary

Leading-twist convolution with small-x singular PDFs matches threshold J/ψ data but requires eikonal unitarization fitted to HERA to cover the full energy range, with the dispersive real part dominating near threshold.

Cited by

1 paper in Pith

Target-Mass Corrections in the OPE Sum-Rule Approach to Quarkonium-Nucleon Interactions with Global-Fit PDFs: an $x$-Resolved Analysis

Receipt and verification

First computed	2026-06-02T03:04:41.406841Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b9613980580974b8a9909675f8ba25558d7eb05a250e08d15e2d1a5546d7463

Aliases

arxiv: 2604.20247 · arxiv_version: 2604.20247v4 · doi: 10.48550/arxiv.2604.20247 · pith_short_12: JOLBHGAFQCLU · pith_short_16: JOLBHGAFQCLUXCUZ · pith_short_8: JOLBHGAF

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/JOLBHGAFQCLUXCUZBFTV7C5CKV \
  | 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: 4b9613980580974b8a9909675f8ba25558d7eb05a250e08d15e2d1a5546d7463

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49621a64564f2441df5223f785d315f1e1b3b8fdd33981d87e66ccf52769b397",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2026-04-22T06:50:04Z",
    "title_canon_sha256": "b6bdee054a867c4cee1d33b8e769624c660d4c785ebad708d5f9b1df75df716b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.20247",
    "kind": "arxiv",
    "version": 4
  }
}