English

$B\to D^{(\ast)}\ell\nu$ at non-zero recoil

High Energy Physics - Lattice 2022-12-21 v1 High Energy Physics - Phenomenology

Abstract

BB anomalies play a prominent role in Beyond the Standard Model (BSM) physics searches. In particular, the long standing tension between the inclusive and the exclusive determinations of the CKM matrix element Vcb|V_{cb}| and the current tensions in the R(D)R(D)--R(D)R(D^\ast) plane between theory and experiment have brought the BD()νB\to D^{(\ast)}\ell\nu semileptonic processes to the spotlight. Existing lattice-QCD calculations of the BDνB\to D\ell\nu form factors at non-zero recoil are being complemented with very recent developments in the BDνB\to D^\ast\ell\nu channel. In this review I discuss recent progress in lattice calculations of BD()νB\to D^{(\ast)}\ell\nu, as well as the implications of these results for high precision determinations of Vcb|V_{cb}| and the Lepton Flavor Universality (LFU) ratios R(D())R(D^{(\ast)}).

Keywords

Cite

@article{arxiv.2212.10217,
  title  = {$B\to D^{(\ast)}\ell\nu$ at non-zero recoil},
  author = {Alejandro Vaquero},
  journal= {arXiv preprint arXiv:2212.10217},
  year   = {2022}
}

Comments

19 pages, 18 figures. Proceedings of the 39th International Symposium on Lattice Field Theory (Lattice2022), 8-13 August, 2022, Bonn, Germany