科研之友
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摘要
We review some decays that require knowledge of the decay constants of 0(+) heavy-light mesons. We compute the decay constants of P-wave heavy-light mesons from unquenched lattice QCD, with two degenerate flavours of sea quarks, at a single lattice spacing. The lightest sea quark mass used in the calculation is a third of the strange quark mass. For the charm-strange meson we obtain the decay constant: f(Ds0)(+)=340(110) MeV using our normalization conventions. We obtain the f(Ps)(static) (static-strange P-wave) decay constant as 302(39) MeV.
- 出版日期2006-7
