Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
HK: Physik der Hadronen und Kerne
HK 18: Theorie III
HK 18.7: Vortrag
Dienstag, 23. März 1999, 15:30–15:45, A
Glueball-quarkonia content and decay of scalar-isoscalar mesons — •M. Strohmeier-Prešiček1, T. Gutsche1, R. Vinh Mau2, and Amand Faessler1 — 1Institut für Theoretische Physik, Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen — 2Division de Physique Théorique, Institut de Physique Nucléaire, 91406 Orsay Cedex and LPTPE, Université P. et M. Curie, 4 Place Jussieu, 75230 Paris Cedex, France
We investigate the hadronic two-body decay modes of the scalar-isoscalar f0(1370), f0(1500) and f0(1710) states as resulting from the mixture of the lowest lying scalar glueball with the isoscalar states of the ground state 3P0 QQ nonet. In the decay analysis we take into account the direct coupling of the quarkonia and glueball components of the f0 states to the quarkonia components of the two meson final state with the decay dynamics inspired by the strong coupling limit of QCD. We calculate partial decay widths for the f0 states in proposed three-state mixing schemes and discuss their compatibility with the observed decay features. Finally, we determine the glueball-quarkonia content of the f0 states from a the detailed fit to experimental decay data of f0(1500) and give predictions for the partial decay widths of f0(1370) and f0(1710) providing a sensitive test of the proposed mixing scheme.