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arXiv · 2604.06892

$B\to D^\ast\ell\nu$ from LQCD: is there light at the end of the tunnel?

Alejandro Vaquero
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Abstract

Lattice QCD (LQCD) calculations play a key role in the establishment of flavor anomalies. One of the most recent advancements in LQCD to this end has been the publication of several calculations of the $B\to D^\ast\ell\nu$ form factors, but despite all the anticipation, the LQCD results have been unable to give a final answer to the questions it was destined to answer. In this work I briefly review what is the current status of heavy-to-heavy and heavy-to-light semileptonic decays calculations in LQCD, and what we can expect for the near and not-so-near future.

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Alejandro Vaquero. 2026-04-08. $B\to D^\ast\ell\nu$ from LQCD: is there light at the end of the tunnel?. https://arxiv.org/abs/2604.06892

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