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### Quenched light hadron mass spectrum and decay constants: The effects of O(a) improvement at β = 6.2

Christopher Michael, R.D. Kenway, B.J. Pendleton, Christopher T. Sachrajda, D.G. Richards, K.C. Bowler, S.P. Booth, D.S. Henty, J.N. Simone , A.D. Simpson, R.M. Baxter, S. Collins, A. McKerrell, C. McNeile, M. Prisznyak, Chris Allton

Nuclear Physics B, Volume: 407, Issue: 2, Pages: 331 - 355

Swansea University Author:

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DOI (Published version): 10.1016/0550-3213(93)90061-S

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 fermion action with those obtained using the standard Wilson fermion action on the same set of 18 gauge configurations. For pseudoscalar meson masses in the rang...

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Published in: Nuclear Physics B 05503213 1993 https://cronfa.swan.ac.uk/Record/cronfa28445 No Tags, Be the first to tag this record!
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 fermion action with those obtained using the standard Wilson fermion action on the same set of 18 gauge configurations. For pseudoscalar meson masses in the range 330--800MeV, we find no significant difference between the results for the two actions. The scales obtained from the string tension and mesonic sector are consistent, but differ from that derived from baryon masses. The ratio of the pseudoscalar decay constant to the vector meson mass increases slowly with quark mass as observed experimentally. Faculty of Science and Engineering 2 331 355