{
  "id": "2403.12795",
  "version": "v1",
  "published": "2024-03-19T14:57:36.000Z",
  "updated": "2024-03-19T14:57:36.000Z",
  "title": "Extraction of trans-helicity worm-gear distributions and opportunities at the Electron-Ion Collider in China",
  "authors": [
    "Ke Yang",
    "Tianbo Liu",
    "Peng Sun",
    "Yuxiang Zhao",
    "Bo-Qiang Ma"
  ],
  "comment": "17 pages, 11 figures",
  "categories": [
    "hep-ph",
    "hep-ex",
    "nucl-th"
  ],
  "abstract": "We present a global analysis of the trans-helicity worm-gear distribution function, $g_{1T}^\\perp$, by fitting the longitudinal-transverse double spin asymmetry data of the semi-inclusive deep inelastic scattering. The analysis is performed within the framework of transverse momentum dependent factorization and evolution. It is found that the $u$-quark favors a positive distribution and the $d$-quark favors a negative distribution, which is consistent with previous model calculations and phenomenological extractions. Based on the fit to existing world data, we also study the impact of the proposed electron-ion collider in China and conclude that it can significantly improve the precision of the worm-gear distribution function and hence enhance our understanding of nucleon spin structures.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2024-03-19T14:57:36.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "electron-ion collider",
      "extraction",
      "trans-helicity worm-gear distribution function",
      "longitudinal-transverse double spin asymmetry data",
      "opportunities"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 17,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}