Hadron97 Biennial International Conference on Hadron Physics

Brookhaven National Laboratory, Upton NY
August 25-30, 1997

 

The RadPhi Experiment at Jefferson Lab

presented by
Richard T. Jones
University of Connecticut and Jefferson Lab

on the behalf of
the RadPhi collaboration
 
 
 
Abstract
The scalar mesons, the f0(980) and the a0(980), have been receiving much attention of late. The low values of their masses and widths bring into question their assignment to the 3P0 qbar,q scalar nonet and recent Crystal Barrel results have uncovered scalar states with more appropriate masses and widths. It has been suggested that the f0(980) and the a0(980) are molecules or 4-quark states. This talk reviews the theoretical status of these states, and the variety of experimental observations which have a bearing on their interpretation. At JLab (formerly CEBAF), an experiment is underway to look for the rare radiative decays -> f0 and -> a0 using 's photoproduced from an intense 6GeV photon beam. The ratio of these branching ratios is expected to discriminate between competing models of the substructure of these scalars. The experiment will also measure the poorly-known branching ratio for -> ' .

(postscript slides, 515Kb compressed)
(conference proceedings, postscript, 300Kb)

Richard Jones,

RadPhi collaboration