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HK: Physik der Hadronen und Kerne

HK 3: Theorie I

HK 3.7: Vortrag

Montag, 22. März 1999, 15:45–16:00, A

Meson-Antimeson Potentials in Different Isospin Channels from Lattice QCD — •H.R. Fiebig¹, H. Markum², A. Mihály³, and K. Rabitsch² — ¹Physics Department, FIU - University Park, Miami, Florida 33199, USA — ²Institut für Kernphysik, Technische Universität, A-1040 Vienna, Austria — ³Department of Theoretical Physics, Lajos Kossuth University, H-4010 Debrecen, Hungary

A local potential for the residual mesons-antimeson interaction with mesons consisting of a heavy and a light quark is computed in quenched lattice QCD with Kogut-Susskind fermions. We start from the time-correlation function of the corresponding two-hadron system without free parameters. We project into the I=0 and I=1 isospin channels. Attractive potentials for short distances are obtained indicating the absence of resonant states.