QUENCHED LIGHT HADRON MASS-SPECTRUM AND DECAY CONSTANTS - THE EFFECTSOF O(A) IMPROVEMENT AT BETA=6.2

Authors
ALLTON CR SACHRAJDA CT BAXTER RM BOOTH SP BOWLER KC COLLINS S HENTY DS KENWAY RD MCNEILE C PENDLETON BJ RICHARDS DG SIMONE JN SIMPSON AD MCKERRELL A MICHAEL C PRISZNYAK M
Citation
Cr. Allton et al., QUENCHED LIGHT HADRON MASS-SPECTRUM AND DECAY CONSTANTS - THE EFFECTSOF O(A) IMPROVEMENT AT BETA=6.2, Nuclear physics. B, 407(2), 1993, pp. 331-355
Citations number
40
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. B → ACNP
ISSN journal
05503213
Volume
407
Issue
2
Year of publication
1993
Pages
331 - 355
Database
ISI
SICI code
0550-3213(1993)407:2<331:QLHMAD>2.0.ZU;2-Z
Abstract
We compare the light hadron spectrum and decay constants for quenched QCD at beta = 6.2 using an O(a)-improved nearest-neighbour Wilson ferm ion action with those obtained using the standard Wilson fermion actio n on the same set of 18 gauge configurations. For pseudoscalar meson m asses in the range 330-800 MeV, we find no significant difference betw een the results for the two actions. The scales obtained from the stri ng tension and mesonic sector are consistent, but differ from that der ived from baryon masses. The ratio of the pseudoscalar decay constant to the vector meson mass increases slowly with quark mass as observed experimentally.