Hadronic decay of a scalar B meson from the lattice

UKQCD Collaboration; McNeile, C.; Michael, C.; Thompson, G.

Hadronic decay of a scalar B meson from the lattice

Authors

Description

We explore the transitions B$(0^+)$ to B $π$ and B$_s(0^+)$ to B K from lattice QCD with $N_f=2$ flavours of sea quark, using the static approximation for the heavy quark. We evaluate the effective coupling constants, predicting a B$(0^+)$ to B $π$ width of around 160 MeV. Our result for the coupling strength adds to the evidence that the B$_s(0^+)$ meson is not predominantly a molecular state (BK).
10 pages LATEX