Precision lattice QCD computation of the $B^{\ast }B\pi$ coupling

Fabio Bernardoni, John Bulava, Michael Donnellan +1

The static $B^{\ast }B\pi$ coupling, ${\hat{g}}_{\chi }$, a low energy constant in the leading order heavy meson chiral Lagrangian, is determined using $N_{\mathrm{f}}=2$ lattice QCD. We use CLS…