Excited States in Staggered Meson Propagators
arXiv:hep-lat/0309117 · doi:10.1016/S0920-5632(03)02539-8
Abstract
We report on preliminary results from multi-particle fits to meson propagators with three flavors of light dynamical quarks. We are able to measure excited states in propagators with pion quantum numbers, which we interpret as the pion 2S state, and is evidence of locality of the action. In the a_0 (0^{++}) propagators we find evidence for excited states which are probably the expected decay channels, pi+eta and K+Kbar.
arXiv commentLattice2003(spectrum) 3 pages, 4 figures
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- Full nonperturbative QCD simulations with 2+1 flavors of improved staggered quarks
- Light hadrons with improved staggered quarks: approaching the continuum limit
- Spatially improved operators for excited hadrons on the lattice
- Results on improved KS dynamical configurations: spectrum, decay constants, etc