2-BODY SPECTRA OF PSEUDOSCALAR MESONS WITH AN O(A(2))-IMPROVED LATTICE ACTION USING WILSON FERMIONS

Authors
FIEBIG HR MARKUM H MIHALY A RABITSCH K WOLOSHYN RM
Citation
Hr. Fiebig et al., 2-BODY SPECTRA OF PSEUDOSCALAR MESONS WITH AN O(A(2))-IMPROVED LATTICE ACTION USING WILSON FERMIONS, Nuclear physics. B, Proceedings supplement, 63, 1998, pp. 188-190
Citations number
10
Categorie Soggetti
Physics, Particles & Fields
Journal title
Nuclear physics. B, Proceedings supplement → ACNP
ISSN journal
09205632
Volume
63
Year of publication
1998
Pages
188 - 190
Database
ISI
SICI code
0920-5632(1998)63:<188:2SOPMW>2.0.ZU;2-R
Abstract
We extend our calculations with the second-order tree-level and tadpol e improved next-nearest-neighbor action to meson-meson systems. Correl ation matrices built from interpolating fields representing two pseudo scalar mesons (pi-pi) with relative momenta (p) over right arrow are d iagonalized, and the mass spectrum is extracted. Link variable fuzzing and operator smearing at both sinks and sources is employed. Calculat ions are presented for two values of the hopping parameter. The spectr um is used to discuss the residual interaction in the meson-meson syst em.