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High Energy Physics - Lattice

arXiv:hep-lat/9910022 (hep-lat)
[Submitted on 12 Oct 1999 (v1), last revised 6 Mar 2000 (this version, v3)]

Title:Quenched QCD with O(a) improvement: I. The spectrum of light hadrons

Authors:UKQCD Collaboration: K.C. Bowler, P. Boyle, J. Garden, R.D. Kenway, D.G. Richards, P.A. Rowland, S.M. Ryan, H. Simma, C. Michael, H.P. Shanahan, H. Wittig
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Abstract: We present a comprehensive study of the masses of pseudoscalar and vector mesons, as well as octet and decuplet baryons computed in O(a) improved quenched lattice QCD. Results have been obtained using the non-perturbative definition of the improvement coefficient c_sw, and also its estimate in tadpole improved perturbation theory. We investigate effects of improvement on the incidence of exceptional configurations, mass splittings and the parameter J. By combining the results obtained using non-perturbative and tadpole improvement in a simultaneous continuum extrapolation we can compare our spectral data to experiment. We confirm earlier findings by the CP-PACS Collaboration that the quenched light hadron spectrum agrees with experiment at the 10% level.
Comments: 36 pages, 7 postscript figures, REVTEX; typo in Table XVIII corrected; extended discussion of finite-size effects in sections III and VII; version to appear in Phys. Rev. D
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph)
Report number: OUTP-99-50P, Edinburgh 1999/16, DAMTP-1999-138
Cite as: arXiv:hep-lat/9910022
  (or arXiv:hep-lat/9910022v3 for this version)
  https://doi.org/10.48550/arXiv.hep-lat/9910022
Journal reference: Phys.Rev.D62:054506,2000
Related DOI: https://doi.org/10.1103/PhysRevD.62.054506

Submission history

From: Hartmut Wittig [view email]
[v1] Tue, 12 Oct 1999 14:51:58 UTC (97 KB)
[v2] Mon, 25 Oct 1999 14:05:13 UTC (97 KB)
[v3] Mon, 6 Mar 2000 15:08:54 UTC (97 KB)
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