{
  "annotation_id": "057205b8-e559-4cc3-82b2-8481f54033de",
  "date_created": "2026-03-02T18:00:25.257000Z",
  "date_modified": "2026-03-02T18:00:25.257000Z",
  "file_hash": "e50086c4f8525a6e9a51e3a413a6898c1f6dda6d170d43e6cc9cc0a985afc3f6",
  "private": false,
  "record": {
    "abstract": "High-$p_T$ particle spectra in $p+p$ ($\\bar p + p$), $p+A$ and $A+B$\ncollisions are calculated within a QCD parton model in which intrinsic\ntransverse momentum, its broadening due to initial multiple parton scattering,\nand jet quenching due to parton energy loss inside a dense medium are included\nphenomenologically. The intrinsic $k_T$ and its broadening in $p+A$ and $A+B$\ncollisions due to initial multiple parton scattering are found to be very\nimportant at low energies ($\\sqrt{s}\u003c50$ GeV). Comparisons with $S+S$, $S+Au$\nand $Pb+Pb$ data with different centrality cuts show that the differential\ncross sections of large transverse momentum pion production ($p_T\u003e1$ GeV/$c$)\nin $A+B$ collisions scale very well with the number of binary nucleon-nucleon\ncollisions (modulo effects of multiple initial scattering). This indicates that\nsemi-hard parton scattering is the dominant particle production mechanism\nunderlying the hadron spectra at moderate $p_T \\stackrel{\u003e}{\\sim} 1$ GeV/$c$.\nHowever, there is no evidence of jet quenching or parton energy loss. Within\nthe parton model, one can exclude an effective parton energy loss\n$dE_q/dx\u003e0.01$ GeV/fm and a mean free path $\\lambda_q\u003c 7$ fm from the\nexperimental data of $A+B$ collisions at the SPS energies. Predictions for high\n$p_T$ particle spectra in $p+A$ and $A+A$ collisions with and without jet\nquenching at the RHIC energy are also given. Uncertainties due to initial\nmultiple scattering and nuclear shadowing of parton distributions are also\ndiscussed.",
    "arxiv_id": "nucl-th/9812021",
    "authors": [
      "Xin-Nian Wang"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevC.61.064910",
    "journal_ref": "Phys.Rev.C61:064910,2000",
    "title": "Systematic Study of High p_T Hadron Spectra in pp, pA and AA Collisions   from SPS to RHIC Energies",
    "url": "https://arxiv.org/abs/nucl-th/9812021"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ae5c5593-4dfb-47c3-a225-7a3b0ba78235",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}