Meson spectroscopy with derivative quark sources

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

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High Energy Physics - Lattice

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http://salesiana.dossiersoluciones.com/handle/123456789/204477

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0709.4456
 http://arxiv.org/abs/0709.4456
 PoSLAT2007:123,2007

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arXiv