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Tests of light-lepton universality in angular asymmetries of $B^0 \to D^{*-} \ell \nu$ decays

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  • Additional Information
    • Publication Information:
      APS
    • Publication Date:
      2023
    • Collection:
      DESY Publication Database (PUBDB)
    • Subject Terms:
    • Abstract:
      We present the first comprehensive tests of light-lepton universality in the angular distributions of semileptonic $B^0$-meson decays to charged spin-1 charmed mesons. We measure five angular-asymmetry observables as functions of the decay recoil that are sensitive to lepton-universality-violating contributions. We use events where one neutral \B is fully reconstructed in $\Upsilon\left(4S\right)\to{}B \overline{B}$ decays in data corresponding to $189~\mathrm{fb}^{-1}$ integrated luminosity from electron-positron collisions collected with the Belle II detector. We find no significant deviation from the standard model expectations.
    • Relation:
      info:eu-repo/semantics/altIdentifier/pmid/37977641; info:eu-repo/semantics/altIdentifier/issn/0031-9007; info:eu-repo/semantics/altIdentifier/arxiv/arXiv:2308.02023; info:eu-repo/semantics/altIdentifier/wos/WOS:001094327400001; https://bib-pubdb1.desy.de/record/597323; https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2023-06555%22
    • Online Access:
      https://doi.org/10.1103/PhysRevLett.131.181801
      https://doi.org/10.3204/PUBDB-2023-06555
      https://bib-pubdb1.desy.de/record/597323
      https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2023-06555%22
    • Rights:
      info:eu-repo/semantics/openAccess
    • Accession Number:
      edsbas.588B75E5