DECAY CONSTANTS WITH WILSON FERMIONS AT BETA=6.0

Citation
T. Bhattacharya et R. Gupta, DECAY CONSTANTS WITH WILSON FERMIONS AT BETA=6.0, Physical review. D. Particles and fields, 54(1), 1996, pp. 1155-1166
Citations number
23
Categorie Soggetti
Physics, Particles & Fields
ISSN journal
05562821
Volume
54
Issue
1
Year of publication
1996
Part
2
Pages
1155 - 1166
Database
ISI
SICI code
0556-2821(1996)54:1<1155:DCWWFA>2.0.ZU;2-S
Abstract
We present results of a high statistics study of f(pi), f(K), f(D), f( Ds), and f(V)(-1) in the quenched approximation using Wilson fermions at beta=6.0 on 32(3)x64 lattices. We find that the various sources of systematic errors (due to setting the quark masses, renormalization co nstant, and lattice scale) are now larger than the statistical errors. Our best estimates, without extrapolation to the continuum limit, are f(pi)=134(4) MeV, f(K)=159(3) MeV, f(D)=229(7) MeV, f(Ds)=260(4) MeV, and f(V)(-1)(m(rho))=0.33(1), where only statistical errors have been shown. We discuss the extrapolation to the continuum limit by combini ng our data with those from other collaborations.