{
  "abstract": "A bstract : In e ⁺ e − shape-variable studies, and in particular for the case of thrust, fixed-order QCD predictions are typically supplemented with the resummation of contributions enhanced near the two-jet limit.\n\nIn this work we examine whether different, yet legitimate, resummation prescriptions can induce significant differences in the resulting predictions. This can occur because formally equivalent prescriptions may differ by terms that, although subleading, are characterised by asymptotic expansions and may therefore lead to slow convergence.\n\nWe first compare two alternative formulations of resummation: the conjugate-space (or Laplace-space) approach, in which resummation is performed in a variable conjugate to thrust, such that the observable factorises exactly in the soft-collinear limit; and the direct-space formulation, where resummation is instead carried out directly in the thrust variable. We show that, at double-logarithmic level, the inverse Laplace transform generates a convergent tower of subleading terms. Starting from leading-logarithmic accuracy, the expansion becomes asymptotic due to the presence of the Landau pole, leading to a mild log-factorial growth of the coefficients. When including the highest available logarithmic order in the resummation, matched to fixed-order results, we still find non-negligible differences between predictions obtained in the two spaces.\n\nWe then consider a formulation of the resummation that avoids certain approximations commonly used in the derivation of conjugate-space resummation. We observe that this also has a non-negligible numerical impact.\n\nIn general, we find that the systematics stemming from the adoption of different formalisms typically exceeds the quoted theoretical uncertainties, suggesting the need for more conservative theory-error estimates when using the thrust distribution in determinations of the strong coupling.",
  "abstract_shown": true,
  "affiliations": [
    "CERN, Theoretical Physics Department",
    "INFN, Sezione di Milano-Bicocca",
    "Università degli Studi di Milano-Bicocca",
    "Università degli Studi di Torino",
    "INFN, Sezione di Torino"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Luca Buonocore",
      "orcid": "0000-0002-3798-511X"
    },
    {
      "affs": [
        1
      ],
      "name": "Paolo Nason",
      "orcid": "0000-0001-9250-246X"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Luca Rottoli",
      "orcid": "0000-0001-6967-5127"
    },
    {
      "affs": [
        3,
        4
      ],
      "name": "Paolo Torrielli",
      "orcid": "0000-0003-0691-0788"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1faa5zb0rrmab.bib",
  "cited_by": 0,
  "doi": "10.1007/jhep10(2026)178",
  "fulltext_url": "https://doi.org/10.1007/JHEP10(2026)178",
  "id": "1faa5zb0rrmab",
  "issns": [
    "1029-8479"
  ],
  "landing_url": "https://link.springer.com/article/10.1007/JHEP10(2026)178",
  "language": "en",
  "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": [
    [
      "lcc",
      "QC770-798"
    ],
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7134258577",
  "pdf_url": "https://link.springer.com/content/pdf/10.1007/JHEP10(2026)178.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-15",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/1faa5zb0rrmab.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:01Z",
      "native_id": "10.1007/jhep10(2026)178",
      "source": "crossref",
      "url": "https://link.springer.com/article/10.1007/JHEP10(2026)178"
    },
    {
      "first_seen": "2026-10-30T13:45:32Z",
      "native_id": "008c1cdefdbe422ebaebe79834f64d6e",
      "source": "doaj",
      "url": "https://doi.org/10.1007/jhep10(2026)178"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3106|Particle physics theoretical and experimental studies",
      "subfield": "high-energy"
    }
  ],
  "title": "On thrust resummation ambiguities in e+e− annihilation into hadrons",
  "title_text": "On thrust resummation ambiguities in e+e− annihilation into hadrons",
  "type": "peer-reviewed",
  "updated_at": "2026-10-31T14:20:39Z",
  "url": "https://research.draconitic.com/paper/1faa5zb0rrmab",
  "venue": "Journal of High Energy Physics",
  "versions": []
}