We explore the transitions to and to from lattice QCD with flavors of sea quark, using the static approximation for the heavy quark. We evaluate the effective coupling constants, predicting a to width of around 160 MeV. Our result for the coupling strength adds to the evidence that the meson is not predominantly a molecular state ().
- Received 21 April 2004
- Published 2 September 2004
© 2004 The American Physical Society