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Light hadron spectroscopy withO(a)improved dynamical fermions

Christopher Michael, R.D. Kenway, A.C. Irving, K.C. Bowler, S.P. Booth, H. Wittig, M. Foster, J.C. Sexton, M. Talevi, J. Peisa, S.M. Pickles, J. Garden, Z. Sroczynski, Chris Allton Orcid Logo

Physical Review D, Volume: 60, Issue: 3

Swansea University Author: Chris Allton Orcid Logo

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Abstract

We present the first results for the static quark potential and the light hadron spectrum using dynamical fermions at $\beta=5.2$ using an O(a) improved Wilson fermion action together with the standard Wilson plaquette action for the gauge part. Sea quark masses were chosen such that the pseudoscala...

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Published in: Physical Review D
ISSN: 0556-2821 1089-4918
Published: 1999
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa28461
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Abstract: We present the first results for the static quark potential and the light hadron spectrum using dynamical fermions at $\beta=5.2$ using an O(a) improved Wilson fermion action together with the standard Wilson plaquette action for the gauge part. Sea quark masses were chosen such that the pseudoscalar-vector mass ratio, m_PS/m_V$, varies from 0.86 to 0.67. Finite-size effects are studied by using three different volumes, 8^3\cdot 24, 12^3\cdot 24 and 16^3\cdot 24. Comparing our results to previous ones obtained using the quenched approximation, we find evidence for sea quark effects in quantities like the static quark potential and the vector-pseudoscalar hyperfine splitting.
College: Faculty of Science and Engineering
Issue: 3