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Decay Constants of Heavy-Light Mesons · arXivDesk

hep-lat/9312065Dec 16, 1993at the Dallas Lattice Conference, October 1993. 3 pages in a single postscript file, uuencoded form. Rome Preprint 93/985

Decay Constants of Heavy-Light Mesons

APE Collaboration

Abstract

The decay constants of the heavy-light pseudoscalar mesons are studied in a high statistics run using the Wilson action at $β=6.0$ and $β=6.2$ , and the clover action at $β=6.0$ . The systematics of $O(a)$

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discretisation errors are discussed. Our best estimates of the decay constants are:

f_D

= 218(9) MeV,

f_D/f_{Ds}

= 1.11(1) and we obtain preliminary values for

f_B

.

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