{
  "abstract": "Possible anomalous New Physics contributions to dipole and weak dipole moments of the $τ$ lepton rise considerable interest in theoretical and experimental studies of the $τ$-pair production in electron-positron annihilation and in proton-proton collisions at the LHC. In the present paper we discuss and calculate the spin-correlation matrix in the $e^+ e^- \\to τ^+ τ^-$, and in general $f \\bar{f} \\to τ^+ τ^-$ processes, including New Physics contributions to the $γττ$ and $Z ττ$ vertices and longitudinally polarized beams of initial fermions. The $τ$ decays are included as well. This work is an upgrade of our previous studies of the spin correlations in the $ττ$ system produced in the processes with unpolarized initial fermions ($e^- e^+$ and $q\\bar{q}$). A corresponding numerical code is developed. Brief information on how to use and configure the MC programs with a new subroutine is also given.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.30325",
  "author_total": 2,
  "authors": [
    {
      "name": "A. Yu. Korchin"
    },
    {
      "name": "Z. Was"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3tb20kxsgcsyg.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.30325",
  "fulltext_url": null,
  "id": "3tb20kxsgcsyg",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.30325",
  "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"
    ],
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7223368938",
  "pdf_url": "https://arxiv.org/pdf/2610.30325",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3tb20kxsgcsyg.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:34Z",
      "native_id": "2610.30325",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.30325"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Spin correlations in the $τ$-lepton pair in polarized electron-positron annihilation",
  "title_text": "Spin correlations in the τ-lepton pair in polarized electron-positron annihilation",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:34Z",
  "url": "https://research.draconitic.com/paper/3tb20kxsgcsyg",
  "venue": "arXiv",
  "versions": []
}