Abstract
The Crystal Ball detector at the e+e− ‐storage ring DORIS‐II has mesaured the γγ‐excitation of resonances decaying into final states with photons only. The results are presented by the partial widths Γγγ as well as by their helicity form factors. Upper limits on candidates for radially excited mesons as well as gluonia are reported and can easily be compared with values of observed resonances using the helicity form factors. Octet‐singlet mixing angles are derived.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
