{
  "abstract": "The first single-experiment evidence for the rare decay $B^0 \\to μ^+ μ^-$ and the world's most precise measurements of the $B^0_s \\to μ^+ μ^-$ branching fraction and effective lifetime are reported. The results are obtained using Run 3 proton-proton collision data corresponding to an integrated luminosity of 18 fb$^{-1}$ recorded with the LHCb Upgrade I detector at a centre-of-mass energy of $13.6$ TeV between 2024 and 2025. Their combination with the Run 1 and Run 2 LHCb results further improves the precision. All measurements are found to be in agreement with the Standard Model expectations.",
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  "arxiv": "2611.00230",
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      "name": "LHCb collaboration"
    },
    {
      "name": "R. Aaij"
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    {
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    {
      "name": "A. S. W. Abdelmotteleb"
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    {
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      "name": "T. Ackernley"
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      "name": "A. A. Adefisoye"
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      "name": "M. Adinolfi"
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    {
      "name": "F. Archilli"
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    {
      "name": "M. Argenton"
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    {
      "name": "S. Arguedas Cuendis"
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    {
      "name": "L. Arnone"
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    {
      "name": "M. Artuso"
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      "name": "E. Aslanides"
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      "name": "R. Ataíde Da Silva"
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      "name": "B. Audurier"
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      "name": "J. A. Authier"
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    {
      "name": "I. Bachiller Perea"
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    {
      "name": "S. Bachmann"
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    {
      "name": "J. J. Back"
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    {
      "name": "M. Bai"
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    {
      "name": "Z. B. Bai"
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    {
      "name": "V. Balagura"
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    {
      "name": "A. Balboni"
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    {
      "name": "W. Baldini"
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    {
      "name": "L. Balzani"
    },
    {
      "name": "H. Bao"
    },
    {
      "name": "J. Baptista de Souza Leite"
    },
    {
      "name": "C. Barbero Pretel"
    },
    {
      "name": "I. R. Barbosa"
    },
    {
      "name": "W. Barker"
    },
    {
      "name": "R. J. Barlow"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/azy1fsvrytbp2.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.00230",
  "fulltext_url": null,
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  "landing_url": "https://arxiv.org/abs/2611.00230",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
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  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
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  "pdf_url": "https://arxiv.org/pdf/2611.00230",
  "pmcid": null,
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  "published": "2026-11-01",
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  "ris": "https://research.draconitic.com/paper/azy1fsvrytbp2.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.00230",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.00230"
    }
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  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Evidence for the decay $B^0 \\to μ^+ μ^-$ and improved measurements of the decay $B^0_s \\to μ^+ μ^-$",
  "title_text": "Evidence for the decay B^0 → μ^+ μ^- and improved measurements of the decay B^0_s → μ^+ μ^-",
  "type": "preprint",
  "updated_at": "2026-11-04T15:20:57Z",
  "url": "https://research.draconitic.com/paper/azy1fsvrytbp2",
  "venue": "arXiv",
  "versions": []
}