Determination of radiative widths of scalar mesons from experimental results on \gamma\gamma\to\pi\pi |
| |
| Authors: | M Boglione MR Pennington |
| |
| Institution: | (1) Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands , NL;(2) Centre for Particle Theory, University of Durham, Durham DH1 3LE, UK , GB |
| |
| Abstract: | The scalar mesons in the 1 GeV region constitute the Higgs sector of the strong interactions. They are responsible for the
masses of all light flavour hadrons. However, the composition of these scalar states is far from clear, despite decades of
experimental effort. The two photon couplings of the 's are a guide to their structure. Two photon results from Mark II, Crystal Ball and CELLO prompt a new Amplitude Analysis
of , cross-sections. Despite their currently limited angular coverage and lack of polarized photons, we use a methodology that
provides the nearest one can presently achieve to a model-independent partial wave separation. We find two distinct classes
of solutions. Both have very similar two photon couplings for the and . Hopefully these definitive results will be a spur to dynamical calculations that will bring us a better understanding of
these important states.
Received: 10 Decmeber 1998 / Published online: 27 April 1999 |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
