{
  "annotation_id": "fa17c653-55c3-439f-ad03-436c6955c4b2",
  "date_created": "2026-03-02T18:00:22.260000Z",
  "date_modified": "2026-03-02T18:00:22.260000Z",
  "file_hash": "43411b902aa90972cf0daa81569312f2d9dba2e06b92e6e1e63b4bf200387578",
  "private": false,
  "record": {
    "abstract": "It is found that the coupled piNNN-NNN system breaks into fragments in a\nnontrivial way. Assuming the particles as distinguishable, there are indeed\nfour modes of fragmentation into two clusters, while in the standard three-body\nproblem there are three possible two-cluster partitions and conversely the\nfour-body problem has seven different possibilities. It is shown how to\nformulate the pion-three-nucleon collision problem through the\nintegral-equation approach by taking into account the proper fragmentation of\nthe system. The final result does not depend on the assumption of separability\nof the two-body t-matrices. Then, the quasiparticle method a\u0027 la\nGrassberger-Sandhas is applied and effective two-cluster connected-kernel\nequations are obtained. The corresponding bound-state problem is also\nformulated, and the resulting homogeneous equation provides a new approach\nwhich generalizes the commonly used techniques to describe the three-nucleon\nbound-state problem, where the meson degrees of freedom are usually suppressed.",
    "arxiv_id": "nucl-th/9806061",
    "authors": [
      "L. Canton"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.58.3121",
    "journal_ref": "Phys.Rev.C58:3121-3142,1998",
    "title": "The pion-three-nucleon problem with two-cluster connected-kernel   equations",
    "url": "https://arxiv.org/abs/nucl-th/9806061"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "84e0f35d-308d-4cea-80c3-746f1ea5b6c8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}