{
  "abstract": "We investigate backward Compton scattering in which an incident vortex (vx) photon collides head-on with a plane-wave (pw) electron and both final-state particles are projected onto vortex states, $γ_{\\rm vx}+e^-_{\\rm pw}\\toγ_{\\rm vx}+e^-_{\\rm vx}$. We derive analytically the scattering amplitude and differential cross sections in the energy and cone angle of either final particle. Rotational symmetry implies a selection rule associated with the conservation of the total angular momentum along the collision axis. A Bessel-Gaussian wave packet is adopted for the incident photon to provide a physical normalization and regularize the boundary singularities of ideal Bessel states. We present numerical results for a $10~{\\rm MeV}$ electron colliding with a vortex photon of central energy $1~{\\rm MeV}$ or $10~{\\rm keV}$. The final-photon distributions exhibit strong energy--angle correlations, topological-charge-dependent interference fringes, and systematic shifts of their dominant peaks, allowing different topological charge sectors to be enhanced through angular or energy post-selection. For a longitudinally polarized incident electron, the dominant channels favor final photons of matching helicity. For the $1~{\\rm MeV}$ photon benchmark, the final electron can likewise be produced as a MeV-scale vortex state with a sizable cone angle and a large angular-momentum projection. These results demonstrate that triple-vortex backward Compton scattering offers a potential means of generating and controlling high-energy vortex photons and electrons.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.08758",
  "author_total": 3,
  "authors": [
    {
      "name": "Yi Liao"
    },
    {
      "name": "Zhaolong Teng"
    },
    {
      "name": "Hao-Lin Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9kvzmh0eaedkn.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.08758",
  "fulltext_url": null,
  "id": "9kvzmh0eaedkn",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.08758",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "arxiv",
      "physics.atom-ph"
    ],
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "openalex",
      "3107|Orbital Angular Momentum in Optics"
    ]
  ],
  "openalex": "W7212048311",
  "pdf_url": "https://arxiv.org/pdf/2609.08758",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9kvzmh0eaedkn.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:52Z",
      "native_id": "2609.08758",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.08758"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.atom-ph",
      "subfield": "amo"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Backward Compton scattering with three vortex particles",
  "title_text": "Backward Compton scattering with three vortex particles",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:52Z",
  "url": "https://research.draconitic.com/paper/9kvzmh0eaedkn",
  "venue": "arXiv",
  "versions": []
}