  A narrow near-threshold proton-emitting resonance (Ex = 11.4 MeV, J$^{\pi}$ =
1/2$^{+}$ and $\Gamma_{p}$ = 4.4 keV) was directly observed in $^{11}$B via
proton resonance scattering. This resonance was previously inferred in the
$\beta$-delayed proton emission of the neutron halo nucleus $^{11}$Be. The good
agreement between both experimental results serves as a ground to confirm the
existence of such exotic decay and the particular behavior of weakly bound
nuclei coupled to the continuum. $R$-matrix analysis shows a sizable partial
decay width for both, proton and $\alpha$ emission channels.
