Dresden 2000 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 26: Theorie IV
HK 26.5: Vortrag
Donnerstag, 23. März 2000, 17:45–18:00, B 81
Intrusion of a glueball-configuration in the scalar-isoscalar meson spectrum — •T. Gutsche1, M. Strohmeier-Prešiček1, A. Faessler1, and R. Vinh Mau2 — 1Institut für Theoretische Physik, Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany — 2LPTPE, Université P. et M. Curie, 4 Place Jussieu, 75230 Paris Cedex, France
We analyse the hadronic two-body decay modes and NN production rates of the scalar-isoscalar resonances f0(1370), f0(1500) and f0(1710) resulting from the mixture of the lowest lying scalar glueball with the isoscalar states of the ground state 3P0 QQ nonet. In the decay and production analysis we take into account the direct coupling of the quarkonia and glueball components of the f0 states to the quarkonia components of the respective decay and production channels. We give evidence that both the observed decay characteristics and the production rates of the scalar-isoscalar states are consistent with a scenario where a dominant glueball component resides in the f0(1500) state.
[1] M. Strohmeier-Prešiček, T. Gutsche, R. Vinh Mau and Amand Faessler, Phys. Rev. D60 (1999) 054010