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The excited hadron spectrum in lattice QCD using a new method of estimating quark propagation

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arxiv 1002.0818 v1 pith:ES65WPO2 submitted 2010-02-03 hep-lat

The excited hadron spectrum in lattice QCD using a new method of estimating quark propagation

C. Morningstar , A. Bell , J. Bulava , E. Engelson , J. Foley , K.J. Juge , D. Lenkner , M. Peardon
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S. Wallace C.H. Wong
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keywords estimatingexcitedhadronlatticemethodoperatorspropagationquark
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Progress in determining the spectrum of excited baryons and mesons in lattice QCD is described. Large sets of carefully-designed hadron operators have been studied and their effectiveness in facilitating the extraction of excited-state energies is demonstrated. A new method of stochastically estimating the low-lying effects of quark propagation is proposed which will allow reliable determinations of temporal correlations of single-hadron and multi-hadron operators.

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