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Meson-meson potentials from lattice QCD and inverse scattering |
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| Authors: | H R Fiebig H Markum A Mihály K Rabitsch M Sander H V von Geramb |
| Institution: | 1. Physics Department, Florida International University, 33199, Miami, Florida, USA 2. Institut für Kernphysik, Technische Universit?t Wien, A-1040, Vienna, Austria 3. Department of Theoretical Physics, Debrecen University, H-4010, Debrecen, Hungary 4. Theoretische Kernphysik, Universit?t Hamburg, D-22761, Hamburg, Germany |
| Abstract: | Potentials between light-light and heavy-light mesons are computed from meson-meson Green’s functions in the framework of quenched lattice QCD with Kogut-Susskind fermions. Comparisons with a full QCD simulation and a simulation using an O(a 2) tree-level and tadpole improved gauge action show that dynamic quarks and lattice discretization errors have no drastic influence. Calculations from inverse scattering theory propose a similar shape for $K\bar K$ potentials, whereas a good qualitative agreement with ππ potentials could not be obtained. |
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