Pith Number

pith:SC72EMPF

pith:2026:SC72EMPFOEUE7OHCELCYOGIUQ5

not attested not anchored not stored refs resolved

New analysis for Nucleon Form Factors from GPDs

Fatemeh Arbabifar, Nader Morshedian, Shahin Atashbar Tehrani

The AMA25 ansatz for generalized parton distributions yields lower reduced chi-squared fits and more stable extrapolations than the prior GSAMA24 model.

arxiv:2605.14083 v1 · 2026-05-13 · hep-ph

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\usepackage{pith}
\pithnumber{SC72EMPFOEUE7OHCELCYOGIUQ5}

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Record completeness

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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

The AMA25 ansatz demonstrates superior fit quality, achieving a reduced χ², while better satisfying theoretical constraints. Additionally, AMA25 exhibits enhanced stability when extrapolated to the exclusive region.

C2weakest assumption

That the new AMA25 functional form is sufficiently flexible and physically motivated to overcome the limitations of GSAMA24 without introducing new biases or overfitting when parameters are adjusted to the same data sets.

C3one line summary

A new ansatz AMA25 for GPDs achieves lower reduced chi-squared fits to nucleon form factor data and better satisfies theoretical constraints than the prior GSAMA24 model.

References

51 extracted · 51 resolved · 1 Pith anchors

[1] D. Muller, D. Robaschik, B. Geyer, F. M. Dittes and J. Horejsi, Fortsch. Phys.42, 101-141 (1994) 1994

[2] X. D. Ji, Phys. Rev. Lett.78, 610-613 (1997) Phys. Rev. Lett.78, 610-613 (1997) 1997

[3] A. V. Radyushkin, Phys. Rev. D56, 5524-5557 (1997) 1997

[4] M. ˇCui´ c, G. Duplanˇ ci´ c, K. Kumeriˇ cki and K. Passek-K., JHEP12, 192 (2023). [erratum: JHEP02, 225 (2024)] 2023

[5] X. D. Ji, Phys. Rev. D55, 7114-7125 (1997) Phys. Rev. D55, 7114-7125 (1997) 1997

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-17T23:39:12.290399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90bfa231e571284fb8e222c5871914877ecbb4e9080aa88a87c63f2d990db5d1

Aliases

arxiv: 2605.14083 · arxiv_version: 2605.14083v1 · doi: 10.48550/arxiv.2605.14083 · pith_short_12: SC72EMPFOEUE · pith_short_16: SC72EMPFOEUE7OHC · pith_short_8: SC72EMPF

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/SC72EMPFOEUE7OHCELCYOGIUQ5 \
  | 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: 90bfa231e571284fb8e222c5871914877ecbb4e9080aa88a87c63f2d990db5d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "279a0f9edc36a9f26fe9a90bf69ad8c4b32866e58c47ebbe658e8553f4a27327",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2026-05-13T20:09:18Z",
    "title_canon_sha256": "88a80c2176b161962cb270ff76e0bd967e791a620bda56afa243b694f82ff2da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.14083",
    "kind": "arxiv",
    "version": 1
  }
}