The Ks0Ks0 final state in two-photon collisions and some implications for glueball searches

✍ Scribed by Saverio Braccini

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 355 KB
• Volume: 655
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(99)00194-3

✦ Synopsis

The K,K~ final state in two-photon collisions is studied with the L3 detector at LEP 0 0 using data at centre of mass energies from 91 GeV to 183 GeV. The KsK s mass spectrum is dominated by the formation of the f~(1525) tensor meson whose two-photon partial width is measured. Clear evidence for destructive f2-a2 interference is observed. No signal is presen; in the region around 2.2 GeV. An upper limit for the two-photon partial width times the K°K ° branching ratio of the ~(2230) glueball candidate is then derived. An enhancement is observed around 1750 MeV. It may be due to the formation of a radial recurrence of the f~(1525) or to the sg member of the 0 ++ meson nonet.