1. BaBar collaboration, Measurement of an excess of
$$ \overline{B}\to {D}^{\left(\ast \right)}{\tau}^{-}{\overline{\nu}}_{\tau } $$decays and implications for charged Higgs bosons, Phys. Rev.D 88 (2013) 072012 [arXiv:1303.0571] [INSPIRE].
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
0 → D
*−τ
+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 tag at Belle, Moriond EW 2019, (2019).