Pith Number

pith:QP2CL7YU

pith:2026:QP2CL7YUQ2RXAAKWTOLHGE543R

not attested not anchored not stored refs pending

Deeply virtual pion production through two-loop order

Feng Feng, Guang Tang, Qin-Tao Song, Wen Chen, Yu Jia, Zhe-Yu Wang

The first NNLO QCD calculation of deeply virtual pion production finds substantial positive two-loop corrections that improve agreement with JLab data.

arxiv:2604.28164 v2 · 2026-04-30 · hep-ph · hep-ex · hep-lat · nucl-ex · nucl-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QP2CL7YUQ2RXAAKWTOLHGE543R}

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.

Claims

C1strongest claim

We calculate for the first time the next-to-next-to-leading order (NNLO) QCD radiative corrections to the DVπP processes γ_L^* p → π^+ n and γ_L^* p → π^0 p ... The impact of the two-loop QCD corrections appears to be positive and substantial, including which considerably improves the agreement between the perturbative QCD prediction and the available JLab data.

C2weakest assumption

The leading-twist collinear factorization framework remains valid and higher-twist power corrections are negligible throughout the kinematic region Q^2 ≫ |t|, Λ_QCD^2 where the NNLO corrections are applied.

C3one line summary

The first NNLO QCD corrections to longitudinal deeply virtual pion production are computed and shown to substantially improve agreement with JLab data.

Receipt and verification

First computed	2026-06-05T01:14:39.737871Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83f425ff1486a37001569b967313bcdc6fb9f49980cfc9e37f34343e5a09dbb2

Aliases

arxiv: 2604.28164 · arxiv_version: 2604.28164v2 · doi: 10.48550/arxiv.2604.28164 · pith_short_12: QP2CL7YUQ2RX · pith_short_16: QP2CL7YUQ2RXAAKW · pith_short_8: QP2CL7YU

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/QP2CL7YUQ2RXAAKWTOLHGE543R \
  | 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: 83f425ff1486a37001569b967313bcdc6fb9f49980cfc9e37f34343e5a09dbb2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "640bccbba29ce675ef375536a5843a5faf81892c64da245849826cc3bead183b",
    "cross_cats_sorted": [
      "hep-ex",
      "hep-lat",
      "nucl-ex",
      "nucl-th"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2026-04-30T17:48:47Z",
    "title_canon_sha256": "2c619d69c36d07098dd0045de9e1f916aa3e1f93ffadead27d3caaabd81bd2b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.28164",
    "kind": "arxiv",
    "version": 2
  }
}