A High Statistics Lattice Calculation of Heavy - Light Meson Decay Constants
نویسنده
چکیده
We present a high statistics study of the Dand B-meson decay constants. The results were obtained by using the Clover and Wilson lattice actions at two different values of the lattice spacing a, corresponding to β = 6.0 and 6.2. After a careful analysis of the systematic errors present in the extraction of the physical results, by assuming quite conservative discretization errors, we find fDs = 237±16 MeV, fD = 221±17 MeV (fDs/fD = 1.07(4)), fBs = 205 ± 35 MeV, fB = 180 ± 32 MeV (fBs/fB = 1.14(8)), in good agreement with previous estimates.
منابع مشابه
ar X iv : h ep - l at / 9 70 90 43 v 1 1 5 Se p 19 97 1 Heavy - Light Meson Decay Constants on the Lattice
We present a high statistics study of the D-and B-meson decay constants. The results were obtained by using the Clover and Wilson lattice actions at β = 6.0 and 6.2.
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تاریخ انتشار 1997