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2. LHCb collaboration, Measurement of the ratio of branching fractions
$$ \mathcal{B}\left({\overline{B}}^0\to {D}^{\ast +}{\tau}^{-}{\overline{\nu}}_{\tau}\right)/\mathcal{B}\left({\overline{B}}^0\to {D}^{\ast +}{\mu}^{-}{\overline{\nu}}_{\mu}\right), $$Phys. Rev. Lett.115 (2015) 111803 [Erratum ibid.115 (2015) 159901] [arXiv:1506.08614] [INSPIRE].
3. Belle collaboration, Measurement of the τ lepton polarization and R(D
∗) in the decay
$$ \overline{B}\to {D}^{\ast }{\tau}^{-}{\overline{\nu}}_{\tau } $$, Phys. Rev. Lett.118 (2017) 211801 [arXiv:1612.00529] [INSPIRE].
4. LHCb collaboration, Test of Lepton Flavor Universality by the measurement of the B
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+ν
τbranching fraction using three-prong τ decays, Phys. Rev.D 97 (2018) 072013 [arXiv:1711.02505] [INSPIRE].
5. Belle collaboration, Measurement of R(D) and R(D
∗) with a semileptonic tagging method, arXiv:1904.08794 [INSPIRE].