FNAL-MILC presents preliminary, bare and blinded form factors for B to D(*) semileptonic decays from 2+1+1 flavor HISQ ensembles using its established analysis framework.
$B\to D^{(\ast)}\ell\nu$ at non-zero recoil
1 Pith paper cite this work. Polarity classification is still indexing.
abstract
$B$ 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 $|V_{cb}|$ and the current tensions in the $R(D)$--$R(D^\ast)$ plane between theory and experiment have brought the $B\to D^{(\ast)}\ell\nu$ semileptonic processes to the spotlight. Existing lattice-QCD calculations of the $B\to D\ell\nu$ form factors at non-zero recoil are being complemented with very recent developments in the $B\to D^\ast\ell\nu$ channel. In this review I discuss recent progress in lattice calculations of $B\to D^{(\ast)}\ell\nu$, as well as the implications of these results for high precision determinations of $|V_{cb}|$ and the Lepton Flavor Universality (LFU) ratios $R(D^{(\ast)})$.
citation-role summary
citation-polarity summary
fields
hep-lat 1years
2025 1verdicts
CONDITIONAL 1roles
background 1polarities
unclear 1representative citing papers
citing papers explorer
-
$B\rightarrow D^{(*)}$ decays from $N_f=2+1+1$ highly improved staggered quarks and clover $b$-quark in the Fermilab interpretation
FNAL-MILC presents preliminary, bare and blinded form factors for B to D(*) semileptonic decays from 2+1+1 flavor HISQ ensembles using its established analysis framework.