{
 "id": "LIB2-146",
 "entry_version": 10,
 "class": "CLAIM",
 "title": "The closed alpha-cell typing gives the A = 5 gap",
 "statement": "With f4 = 0 closing the alpha cell, a fifth nucleon is an external τ-line with no scalar channel, so the registered single-nucleon attachment to alpha is unbound.",
 "scope": {
  "carrier": "The closed alpha cell and an added nucleon",
  "domain": "The A = 5 gap within the registered cluster construction.",
  "group": null,
  "hypotheses": [
   "Use the frozen closed-cell typing f4 = 0 and the external τ-line assignment."
  ],
  "physical_target": null,
  "quantifier": "The registered construction and its stated premises.",
  "real_form": null
 },
 "source_labels_as_printed": {
  "math_status": "NOT_PRINTED",
  "attachment": "NOT_PRINTED",
  "scorecard_tier_word": null,
  "pdf_page": 128
 },
 "house_tier": null,
 "review_state": "PUBLISHED",
 "scientific_status": "UNDER_REVIEW (house status not yet adjudicated)",
 "evidence_status": [
  {
   "kind": "registry",
   "availability": "shipped"
  }
 ],
 "primary_source": {
  "component": "Paper 9",
  "section": "§4, Theorem 4.1: A = 5 gap",
  "pdf_page": 132,
  "quote": "f4 = 0 closes the α cell, so a fifth nucleon is an external τ -line with no scalar channel: no single nucleon binds to α."
 },
 "caution": "The gap depends on the registered cell typing and does not determine the full charge-magnitude sector.",
 "candidate_ids": [
  "C2-074"
 ],
 "basis": {
  "pdf_sha256_prefix": "b64ddcd9e16a6dcd",
  "release": "Rev33.1_S369"
 },
 "relationships": [
  {
   "type": "related_to",
   "target": "LIB2-143"
  },
  {
   "type": "related_to",
   "target": "LIB2-145"
  }
 ],
 "url": "/library-v2/LIB2-146/",
 "content_sha256": "ccf2d835373747b9f478939825d09a1804bb0ae56c205aca841062a029148ea9",
 "build_stamp": "BUILD_STAMP S371a · 2026-09-26T22:53Z · master 01d1a5873ede42f5 · cut 9dcc6ce9a8ee3e02"
}