ITP Hadron Physics Seminars and Workshops

Scalar Mesons and the Fragmented Glueball

by Prof. Eberhard Klempt (Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn)

Asia/Shanghai
944 3726 3471 (zoom)

944 3726 3471

zoom

Description

https://zoom.us/j/94437263471

Abstract:

Evidence for the scalar glueball is reported. The evidence stems from an analysis of BESIII data on radiative J/ψ data into π0π0, KSKS, ηη, and ϕω. The coupled-channel analysis is constrained by a large number of further data. The data are described by ten scalar isoscalar
mesons, covering the range from f0(500) to f0(2330). Five resonances are interpreted as mainly-singlet states in SU(3), ve as mainly-octet states. The mainly-singlet resonances are produced over the full mass range, the production of octet state is limited to the 1500 to 2100MeV mass range. The peak is interpreted as scalar glueball. Its mass, width and yield are determined to Mglueball = (1865+-25)MeV, Γglueball = (370+-50^{+30}_{-20})MeV, YJ/ψ→ γG0 = (5.8 +-1.0) x10-3.

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now

×