Hadronic decay of a scalar B meson from the lattice

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

Hadronic decay of a scalar B meson from the lattice

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arxiv hep-lat/0404010 v1 pith:5QPFCMEN submitted 2004-04-08 hep-lat hep-ph

UKQCD Collaboration: C. McNeile , C. Michael , G. Thompson This is my paper · ORCID

classification hep-lathep-ph

keywords couplinglatticemesonquarkaddsapproximationaroundconstants

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abstract

We explore the transitions B$(0^+)$ to B $\pi$ 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 $\pi$ 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).

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