{
  "visual_id": "E17-axial-transfer",
  "title": "Does a fitted weak current transfer to fusion?",
  "classification": "scoped_public_input_calculation",
  "run_ids": [
    "20260930T005709594476Z-E29-axial-contact"
  ],
  "claim_ids": [
    "C02",
    "C10"
  ],
  "input_files": [
    {
      "path": "runs/20260930T005709594476Z-E29-axial-contact/axial-contact-and-pp-predictions.csv",
      "sha256": "13659bb2b42200f5abbbe9ff755c24fe70ef2815800de629b2aa6ff8c2bfdd31"
    },
    {
      "path": "runs/20260930T005709594476Z-E29-axial-contact/pp-low-energy-overlaps.csv",
      "sha256": "c47110c7649ee2c2634df69d270d517cada846c262352ab885f14c9af2fe8cb5"
    },
    {
      "path": "runs/20260930T005709594476Z-E29-axial-contact/nn-current-transfer.csv",
      "sha256": "eea100ff9c8d8069905d3d8dfa661c43872de704b49bd9ae3b01d46f94fdc57e"
    }
  ],
  "configurations": {
    "E29-axial-contact": {
      "parents": [
        "20260929T233754706450Z-E28-spin-complete",
        "20260930T005525250915Z-E29-trinucleon-weak",
        "20260930T005420065273Z-E28-threshold-refinement"
      ],
      "gA": 1.2756,
      "empirical_gA_GT_over_sqrt3": 1.213,
      "empirical_product_sigma": 0.002,
      "source_Fermi_reference": 0.9993,
      "regulator": "delta_R(r)=exp(-r^2/R^2)/(pi^(3/2) R^3)",
      "operator": "sum_ij delta_R (Pt Oij Ps + Ps Oij Pt), Oij=sigma_zi tau_i+ + sigma_zj tau_j+",
      "pp_energies_MeV": [
        0.0005,
        0.001,
        0.002,
        0.004
      ]
    }
  },
  "assumptions": {
    "E29-axial-contact": [
      "Fit one Gaussian-regulated axial contact to the source empirical tritium axial product, correcting its stated Fermi assumption to our calculated Fermi matrix element.",
      "The contact coefficient belongs to this coordinate regulator/operator convention; it is not identified with the source PDS-scheme L1A number.",
      "LO Hamiltonian plus one fitted short-distance current is a model improvement, not complete NLO renormalization. Missing effective-range/current terms remain physical uncertainties.",
      "Reserve pp fusion: solve the Coulomb scattering wave and bound deuteron from the same two-body interactions, then transfer the same fitted current.",
      "Lambda(0)=sqrt(gamma^3/2) integral u_d u_pp/(k C_eta) dr. The source Solar Fusion II Lambda\u00b2 reference is theoretical, not a new direct measurement.",
      "An nn-only diagnostic keeps the fitted ordinary current coefficient fixed. Its finite-field derivative remains unknown.",
      "Quoted fitted-current uncertainty propagates only the source empirical axial-product error at fixed gA and Hamiltonian; it is not the full model error."
    ]
  },
  "plotted_values": {
    "path": "E17-axial-transfer-data.json",
    "sha256": "d1c0ec87bc588374a57bb2ebc83d4bbc9b1aeea8fd082bc603b3dc682e68fb86"
  },
  "caption": "A normalized Gaussian two-body axial contact is fitted to the empirical tritium axial product, with the calculated Fermi strength retained. Bars propagate only that experimental input error. The same coefficient then acts between the independently solved Coulomb pp and deuteron states; pp fusion is not fitted. Radial, matching-radius, basis and zero-energy extrapolation checks accompany the results. The reference is a theoretical evaluation, not a direct measured pp cross section. This LO-Hamiltonian/current improvement is not a complete higher-order EFT calculation; its residual range dependence and unknown field derivative remain.",
  "alt_text": "The contact fitted to tritium shifts the reserved pp overlap. The regulator spread remains much larger than the empirical calibration error, exposing the limitations of the partial current improvement.",
  "generator": "src/metastable/public_report.py",
  "generator_sha256": "9e263878b7237d781a41d94693004412279b5cfa808ccd6e335b7b07269910d4",
  "generator_dependencies_sha256": {
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    "src/metastable/october_checkpoint15_report.py": "1f6e17b9549dc31fbb58ba578c4d8ed8e219b4ad30810df0a9d7d2d00e63efdc",
    "src/metastable/october_checkpoint16_report.py": "74cb8aac45d1d5ce0e6eb6678e9b6cdf98cd46fd6e264a513b612ab763fcd034",
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  },
  "command": "python run.py full public-report",
  "output_sha256": {
    "svg": "a9c80b461d81942f98d067ce3dccc84e4dd700c3cbb6f0f0f53c0dafd39ef617",
    "png": "14c28a71b7837c68c4deb8e1f4d8701331745fa342b51033fe9a684aeceaed28"
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}