Eur. Phys. J. C (2003) 31: 481-489
https://doi.org/10.1140/epjc/s2003-01384-0The
https://doi.org/10.1140/epjc/s2003-01384-0
experimental physics
The 
formation in two-photon collisions at LEP energies
production in 
interactions has been detected via its decays into 
,K
+
K
-
K
+
K
- and 
in the data taken with the DELPHI detector at LEP1 and LEP2 energies. The two-photon radiative width averaged over all observed decay channels is 
= 13.9 
2.0 (stat.) 1.4(syst.) 2.7 (BR) keV. No direct decay channel 
has been observed. An upper limit < 5.5 keV at 95% confidence level has been evaluated for this decay mode.
© Springer-Verlag, 2003
