{
  "abstract": "A search for a new top-philic vector boson ($Z'$) produced in association with a top-quark or a pair of top quarks, and decaying into a top quark pair is presented. The search uses $pp$ collision data collected by the ATLAS detector at the Large Hadron Collider at centre-of-mass energies of $\\sqrt{s} =$ 13 TeV and 13.6 TeV, corresponding to integrated luminosities of 140 fb$^{-1}$ and 56 fb$^{-1}$, respectively. Events containing exactly two same-sign leptons or at least three leptons (electrons or muons) are selected. A transformer-based classifier parameterised as a function of the $Z'$ mass is used to optimise the signal-to-background discrimination. The results are interpreted in a simplified model with a colour-singlet vector boson coupled to top quarks with coupling strength $c_t$ and chirality angle $θ$. No significant excess is observed above the expected Standard Model background. A $Z'$ boson with mass below 1150 GeV is excluded at 95% confidence level for a benchmark scenario with $c_t = 1$ and $θ= 0$, with an expected limit of 1250 GeV.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.24950",
  "author_total": 2882,
  "authors": [
    {
      "name": "Georges Aad"
    },
    {
      "name": "Erlend Aakvaag"
    },
    {
      "name": "Braden Keim Abbott"
    },
    {
      "name": "Sara Abdelhameed"
    },
    {
      "name": "Kira Abeling"
    },
    {
      "name": "Nils Julius Abicht"
    },
    {
      "name": "Haider Abidi"
    },
    {
      "name": "Mohammed Aboelela"
    },
    {
      "name": "Asmaa Aboulhorma"
    },
    {
      "name": "Halina Abramowicz"
    },
    {
      "name": "Bobby Samir Acharya"
    },
    {
      "name": "Anke Ackermann"
    },
    {
      "name": "Jona Ackerschott"
    },
    {
      "name": "Claire Adam Bourdarios"
    },
    {
      "name": "Leszek Adamczyk"
    },
    {
      "name": "Sagar Addepalli"
    },
    {
      "name": "Matt Addison"
    },
    {
      "name": "Jahred Adelman"
    },
    {
      "name": "Aytul Adiguzel"
    },
    {
      "name": "Tim Adye"
    },
    {
      "name": "Tony Affolder"
    },
    {
      "name": "Yoav Afik"
    },
    {
      "name": "Merve Nazlim Agaras"
    },
    {
      "name": "Anamika Aggarwal"
    },
    {
      "name": "Catalin Agheorghiesei"
    },
    {
      "name": "Ammara Ahmad"
    },
    {
      "name": "Faig Ahmadov"
    },
    {
      "name": "Sonakshi Ahuja"
    },
    {
      "name": "Xiaocong Ai"
    },
    {
      "name": "Giulio Aielli"
    },
    {
      "name": "Arya Aikot"
    },
    {
      "name": "Malak Ait Tamlihat"
    },
    {
      "name": "Torsten Akesson"
    },
    {
      "name": "Daiya Akiyama"
    },
    {
      "name": "Sina Aktas"
    },
    {
      "name": "Gian Luigi Alberghi"
    },
    {
      "name": "Justin Albert"
    },
    {
      "name": "Una Helena Alberti"
    },
    {
      "name": "Pietro Albicocco"
    },
    {
      "name": "Sara Alderweireldt"
    },
    {
      "name": "Zackary Lee Alegria"
    },
    {
      "name": "Martin Aleksa"
    },
    {
      "name": "Igor Alexandrov"
    },
    {
      "name": "Calin Alexa"
    },
    {
      "name": "Theodoros Alexopoulos"
    },
    {
      "name": "Fabrizio Alfonsi"
    },
    {
      "name": "Malte Algren"
    },
    {
      "name": "Muhammad Alhroob"
    },
    {
      "name": "Babar Ali"
    },
    {
      "name": "Hanadi Ali"
    },
    {
      "name": "Shahzad Ali"
    },
    {
      "name": "Samuel William Alibocus"
    },
    {
      "name": "Malik Aliev"
    },
    {
      "name": "Gianluca Alimonti"
    },
    {
      "name": "Corentin Allaire"
    },
    {
      "name": "Benedict Allbrooke"
    },
    {
      "name": "Derrick Allen"
    },
    {
      "name": "Jonny Allen"
    },
    {
      "name": "Camron Stephen Alley"
    },
    {
      "name": "Earl Russel Tang Almazan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/47f80a79fhmr4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.24950",
  "fulltext_url": null,
  "id": "47f80a79fhmr4",
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  "landing_url": "https://hal.science/hal-05780367v1",
  "language": "en",
  "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": [
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      "hep-ex"
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      "openalex",
      "3106|Particle physics theoretical and experimental studies"
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  "openalex": "W7214039596",
  "pdf_url": "https://arxiv.org/pdf/2609.24950",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/47f80a79fhmr4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:48Z",
      "native_id": "hal-05780367",
      "source": "hal",
      "url": "https://hal.science/hal-05780367v1"
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    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2609.24950",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.24950"
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  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Search for a top-philic heavy resonance in association with top quarks in $pp$ collisions at $\\sqrt{s} = $ 13 TeV and 13.6 TeV with the ATLAS detector",
  "title_text": "Search for a top-philic heavy resonance in association with top quarks in pp collisions at $\\sqrt{s} = $ 13 TeV and 13.6 TeV with the ATLAS detector",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/47f80a79fhmr4",
  "venue": "HAL",
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}