{
  "annotation_id": "a42d369b-7603-4be6-a88c-dbfb5753941c",
  "date_created": "2026-03-02T18:00:25.838000Z",
  "date_modified": "2026-03-02T18:00:25.838000Z",
  "file_hash": "2bca8332c097c80a57b8bfddbdafb9878cc5694b9b14b5672125b20bbbbf7ad2",
  "private": false,
  "record": {
    "abstract": "We report a next-to-leading-order (NLO) chiral perturbation theory\ncalculation of the neutron-proton scattering cross section in the ${}^1S_0$\nchannel using a cut-off regularization. The inclusion of two-pion exchanges in\nthe irreducible diagrams -- or potential -- figuring at NLO is found to be\nimportant in enlarging the domain of validity of the effective field theory. We\nare able to reproduce the {\\it empirical} scattering phase shift up to p=300\nMeV -- which is comparable to the cutoff scale involved -- with an agreement\nwhich is superior to results of other effective field theory approaches. We\nalso discuss the role of the cutoff as a renormalization prescription and the\nimportance of the explicit pion degree of freedom in scattering process.",
    "arxiv_id": "nucl-th/9908073",
    "authors": [
      "C. H. Hyun",
      "T. -S. Park",
      "D. -P. Min"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0370-2693(99)01487-2",
    "journal_ref": "Phys.Lett.B473:6-12,2000",
    "title": "A Higher-Order Calculation of $np$ Scattering in Cut-Off Effective Field   Theory",
    "url": "https://arxiv.org/abs/nucl-th/9908073"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "90659240-f883-443f-822f-52696f92bf7c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}