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arXiv · hep-lat/9808016

Light hadron spectroscopy with O(a) improved dynamical fermions

UKQCD Collaboration·C. R. Allton·S. P. Booth·K. C. Bowler·M. Foster·J. Garden·A. C. Irving·R. D. Kenway·C. Michael·J. Peisa·S. M. Pickles·J. C. Sexton·Z. Sroczynski·M. Talevi·H. Wittig
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Abstract

We present the first results for the static quark potential and the light hadron spectrum using dynamical fermions at $β=5.2$ 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.

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UKQCD Collaboration, C. R. Allton, S. P. Booth, K. C. Bowler, M. Foster, J. Garden, A. C. Irving, R. D. Kenway, C. Michael, J. Peisa, S. M. Pickles, J. C. Sexton, Z. Sroczynski, M. Talevi, H. Wittig. 1998-08-17. Light hadron spectroscopy with O(a) improved dynamical fermions. https://doi.org/10.1103/physrevd.60.034507

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