We study mesons on the lattice with a special focus on excited states. For that purpose we construct several quark sources with different spatial smearings, including p-waves. These quark sources are then combined with the appropiate Dirac structures to form meson interpolators of definite spin. We use these operators to construct a cross correlation matrix from which we extract ground and excited meson states using the variational method. For the calculations we use gauge configurations with Nf=2 dynamical Clover Wilson fermions provided by the CP-PACS collaboration. We show preliminary results for pseudoscalar, scalar, vector and pseudovector mesons.
@article{arxiv.hep-lat/0609014,
title = {Excited mesons from $N_f=2$ dynamical Clover Wilson lattices},
author = {Tommy Burch and Christian Hagen and Andreas Schäfer},
journal= {arXiv preprint arXiv:hep-lat/0609014},
year = {2009}
}
Comments
7 pages, 5 figure, parallel session talk at Lattice 2006