{
  "abstract": "A bstract : We investigate a charge-parity (CP) odd axion-like particle (ALP) featuring simultaneous CP-conserving $$(a{F}_{\\mu \\nu }{\\widetilde{F}}^{\\mu \\nu })$$ and CP-violating ( aF μν F μν ) ALP–photon interactions at future lepton colliders. The ALP signal is studied in the process e ⁺ e − → e ⁺ e − a → e ⁺ e − γγ , where the CP structure of the interaction can be probed using the azimuthal angle difference between the final-state electrons, ∆ ϕ ee . We show that the projected sensitivity to the ALP–photon couplings can reach 𝒪(10 − 3 ) TeV − 1 , exceeding current constraints from the electron electric dipole moment ( e EDM). Because purely CP-conserving, purely CP-violating, and mixed interactions generate distinct ∆ ϕ ee distributions, a binned likelihood analysis of this observable enables an efficient discrimination of the ALP interaction structure. In particular, if the CP-conserving and CP-violating couplings are comparable — as motivated by possible symmetry considerations — the interference pattern in the ∆ ϕ ee distribution allows future lepton colliders to identify CP violation in the ALP sector once a signal is observed. For scenarios where the two couplings differ significantly, increasing the integrated luminosity substantially improves the sensitivity to CP-violating effects.",
  "abstract_shown": true,
  "affiliations": [
    "Peking University",
    "School of Physics and Astronomy, Beijing Normal University, and Key Laboratory of Multiscale Spin Physics (Beijing Normal University), Ministry of Education",
    "South China Normal University",
    "Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, Guangdong Provincial Key Laboratory of Nuclear Science"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Jian-Nan Ding",
      "orcid": "0009-0003-4055-3873"
    },
    {
      "affs": [
        1
      ],
      "name": "Yandong Liu",
      "orcid": "0000-0002-3035-9618"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Muyuan Song",
      "orcid": "0000-0003-0446-5043"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7vekqqhkqbd4x.bib",
  "cited_by": 0,
  "doi": "10.1007/jhep10(2026)148",
  "fulltext_url": null,
  "id": "7vekqqhkqbd4x",
  "issns": [
    "1029-8479"
  ],
  "landing_url": "https://link.springer.com/article/10.1007/JHEP10(2026)148",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7134858198",
  "pdf_url": "https://link.springer.com/content/pdf/10.1007/JHEP10(2026)148.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-14",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/7vekqqhkqbd4x.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:01Z",
      "native_id": "10.1007/jhep10(2026)148",
      "source": "crossref",
      "url": "https://link.springer.com/article/10.1007/JHEP10(2026)148"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3106|Particle physics theoretical and experimental studies",
      "subfield": "high-energy"
    }
  ],
  "title": "Probing the CP property of ALP-photon interactions at future lepton colliders",
  "title_text": "Probing the CP property of ALP-photon interactions at future lepton colliders",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:01Z",
  "url": "https://research.draconitic.com/paper/7vekqqhkqbd4x",
  "venue": "Journal of High Energy Physics",
  "versions": []
}