Is the Quenched Spectrum in agreement with Experiment?

Abstract

We analyse the meson spectrum in quenched QCD using lattice gauge theory. By studying hadron propagation with a variety of operators (both smeared and local), we are able to extract the ground state and first excited state masses with confidence. We pay attention to the correlations among the data used in the fits to extract these masses and couplings. We compare the resulting hadron spectrum with experiment and find evidence for a significant departure in the pseudoscalar and vector meson masses.

arXiv comment19 pages, Latex, 8 postscript figures (uuencoded), also available from ftp://suna.amtp.liv.ac.uk/pub/cmi/sl/sl.ps

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