1. BaBar collaboration, Evidence for an excess of
$$ \overline{B} $$→ D(∗)τ−
$$ \overline{\nu} $$τdecays, Phys. Rev. Lett.109 (2012) 101802 [arXiv:1205.5442] [INSPIRE].
2. BaBar collaboration, Measurement of an excess of
$$ \overline{B} $$→ D(∗)τ−
$$ \overline{\nu} $$τdecays and implications for charged Higgs bosons, Phys. Rev.D 88 (2013) 072012 [arXiv:1303.0571] [INSPIRE].
3. Belle collaboration, Measurement of the branching ratio of
$$ \overline{B} $$→ D(∗)τ−
$$ \overline{\nu} $$τrelative to
$$ \overline{B} $$→ D(∗) ℓ−
$$ \overline{\nu} $$ℓdecays with hadronic tagging at Belle, Phys. Rev.D 92 (2015) 072014 [arXiv:1507.03233] [INSPIRE].
4. Belle collaboration, Measurement of the τ lepton polarization and R(D∗) in the decay
$$ \overline{B} $$→ D∗τ−
$$ \overline{\nu} $$τ , Phys. Rev. Lett.118 (2017) 211801 [arXiv:1612.00529] [INSPIRE].
5. BELLE collaboration, Measurement of the τ lepton polarization and R(D∗ ) in the decay
$$ \overline{B} $$→ D∗τ−
$$ \overline{\nu} $$τwith one-prong hadronic τ decays at Belle, Phys. Rev.D 97 (2018) 012004 [arXiv:1709.00129] [INSPIRE].