Unitary integration of quantum liouville-bloch equations

C. Bernard, T. DeGrand, C. DeTar, Steven Gottlieb, Urs M. Heller, J. E. Hetrick, N. Ishizuka, C. McNeile, R. Sugar, D. Toussaint, M. Wingate

Research output: Contribution to journalArticlepeer-review

73 Scopus citations


We report on the MILC Collaboration’s calculation of fB, fBs, fD, fDs, and their ratios. Our central values come from the quenched approximation, but the quenching error is estimated from NF = 2 dynamical staggered lattices. We use Wilson light valence quarks and Wilson and static heavy quarks. We find, for example, fB = 157 ± 11−9−0+25+23MeV, fBs/fB = 1.11 ± 0.02−0.3+0.04 ± 0.03, fDs = 210 ± 9−9−1+25+17MeV, and fB/fDs = 0.75 ± 0.03−0.02−0.00+0.04+0.08, where the errors are statistical, systematic (within the quenched approximation), and systematic (of quenching), respectively.

Original languageEnglish (US)
Pages (from-to)4812-4815
Number of pages4
JournalPhysical review letters
Issue number22
StatePublished - Nov 30 1998

ASJC Scopus subject areas

  • General Physics and Astronomy


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