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Bochum 1998 – wissenschaftliches Programm

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HK: Hadronen und Kerne

HK 33: Structure of Baryons, Mesons V, Theory

HK 33.4: Vortrag

Dienstag, 17. März 1998, 15:15–15:30, J

Potentials between Pion-like Mesons from Lattice QCD — •K. Rabitsch2, H.R. Fiebig1, H. Markum2, and A. Mihály31Physics Department, FIU - University Park, Miami, Florida 33199, USA — 2Institut für Kernphysik, Technische Universität Wien, A-1040 Vienna, Austria — 3Department of Theoretical Physics, Lajos Kossuth University, H-4010 Debrecen, Hungary

We study the interaction between pion-like pseudoscalar mesons consisting of two light valence quarks within four-dimensional Lattice QCD. To extract the residual forces we employ a method, generalized from [1], that starts from the full time-correlation function of the corresponding two-hadron system, and does not involve any free parameters. We obtain attractive potentials between the pseudoscalar mesons. A related study with mesons consisting of one infinitely heavy and one light valence quark also yields an attractive interaction potential of short range.

[1] J. Canosa, H. R. Fiebig, Phys. Rev. D55, 1487 (1997)

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