Progress Report on Computing Excited-State Hadron Masses in Lattice QCD

Details Progress Report on Computing Excited-State Hadron Masses in Lattice QCD Progress Report on Computing Excited-State Hadron Masses in Lattice QCD

2011-03-14

arxiv.org/abs/1103.2783v1

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 4 figures, talk given at the International Conference on the Structure of Baryons, Osaka, Japan, Dec 7-11, 2010

Scientific paper

Our progress in computing the spectrum of excited baryons and mesons in lattice QCD is described. Sets of spatially-extended hadron operators with a variety of different momenta are used. A new method of stochastically estimating the low-lying effects of quark propagation is utilized which allows reliable determinations of temporal correlations of both single-hadron and multi-hadron operators. The method is tested on the isoscalar mesons in the scalar, pseudoscalar, and vector channels, and on the two-pion system of total isospin I=0,1,2.

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