Meson spectroscopy with derivative quark sources

Details Meson spectroscopy with derivative quark sources Meson spectroscopy with derivative quark sources

2007-09-27

arxiv.org/abs/0709.4456v1

PoSLAT2007:123,2007

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, Presented at the XXV International Symposium on Lattice Field Theory, July 30 - August 4 2007, Regensburg, Germany

Scientific paper

We present results for masses of light mesons obtained with the variational method using an enhanced basis of interpolating field operators with different quark smearings. The interpolators are constructed from Jacobi-smeared quarks of a Gaussian type as well as from derivative quark sources obtained by a covariant derivative acting on the Gaussian sources. For our analysis we use quenched gauge configurations with Chirally Improved quarks and the Luescher-Weisz gauge action on a 16^3 x 32 lattice with a = 0.148 fm. We discuss the influence of derivative sources on the overlap with excited states.

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