Un-binned Angular Analysis of $B\to D^*\ell \nu_\ell$ and the Right-handed Current

Zhuo-Ran Huang (1) , Emi Kou (1) , Cai-Dian Lü , Ru-Ying Tang

1 IJCLab - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie

In this article, we perform a sensitivity study of an unbinned angular analysis of the $B\to D^{*}\ell {\nu }_{\ell }$ decay, including the contributions from the right-handed current. We show that the angular observable can constrain very strongly the right-handed current without the intervention of the yet unsolved $V_{cb}$ puzzle.

Mots clés: B: semileptonic decay; lepton: universality: violation; effective Hamiltonian; operator: Wilson; current: right-handed; sensitivity; numerical calculations; new physics

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]; Physique des Hautes Energies - Expérience [hep-ex]

Zhuo-Ran Huang, Emi Kou, Cai-Dian Lü, Ru-Ying Tang. Un-binned Angular Analysis of $B\to D^*\ell \nu_\ell$ and the Right-handed Current. Physical Review D, 2022, 105 (1), pp.013010. ⟨10.1103/PhysRevD.105.013010⟩. ⟨hal-03285129⟩