{
  "abstract": "Neutral-current semileptonic $B$ decays are plagued by hadronic resonances across the dilepton invariant-mass squared spectrum, $q^2$. For light leptons, $\\ell=e,μ$, these resonances can be avoided with suitable $q^2$ cuts. This strategy is less straightforward for $τ$ modes, where missing energy from the $τ$ decay makes $q^2$ difficult to reconstruct. In fact, while Belle II is able to discriminate between different regions in $q^2$ due to its clean environment, this is not directly possible in a hadronic one. Therefore, the interpretation of $b\\to sτ^+τ^-$ measurements from e.g. LHCb, CMS requires the description of these resonant effects. In this article, we adopt a different strategy by including the resonant contributions (in particular from $ψ(2S)$) into our predictions for $B\\to K^{(*)}τ^+τ^-$ decays, instead of avoiding them. We provide predictions for different initial kinematic points ($4m_τ^2, 14.18\\,$GeV$^2$ and $15\\,$GeV$^2$) that can be convenient for LHCb, CMS and Belle II. For this, we use a data-driven approach based on the LHCb measurements of $B\\to K^{(*)}μ^+μ^-$ decays. Including the resonances and integrating over the full $q^2$ range substantially enhances the Standard Model predictions. However, for sufficiently large New Physics, motivated by the current tensions in $R(D^{(*)})$ and $B\\to K^{(*)}νν$ decays, the short-distance contribution becomes comparable to or even exceeds the resonant one. This highlights two advantages of this strategy: it exploits the additional phase space associated with the resonant regions to probe large New Physics contributions, and it enables the use of hadron-collider data, where the resonances cannot be resolved. We further quantify how including or neglecting the resonances affects the total branching ratio as a function of New Physics contributions and, equivalently, of the experimental precision.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.21291",
  "author_total": 5,
  "authors": [
    {
      "name": "Guillermo Baltà"
    },
    {
      "name": "Andreas Crivellin"
    },
    {
      "name": "Rafel Escribano"
    },
    {
      "name": "Joaquim Matias"
    },
    {
      "name": "Martín Novoa-Brunet"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/55pcacmsp3a35.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.21291",
  "fulltext_url": null,
  "id": "55pcacmsp3a35",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.21291",
  "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-ex"
    ],
    [
      "arxiv",
      "hep-lat"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7162019675",
  "pdf_url": "https://arxiv.org/pdf/2605.21291",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/55pcacmsp3a35.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:22Z",
      "native_id": "2605.21291",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.21291"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Impact of Hadronic Resonances on $B\\to K^{(*)}τ^+τ^-$ Decays",
  "title_text": "Impact of Hadronic Resonances on B→ K^(*)τ^+τ^- Decays",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:22Z",
  "url": "https://research.draconitic.com/paper/55pcacmsp3a35",
  "venue": "arXiv",
  "versions": []
}