出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：An overview is given of a number of resonance production prosesses in twophoton
collisions studied with the L3 detector at LEP. The K0K and K0
SK0
S nal
states are analysed using data collected at centre-of-mass energies up to 202 GeV. The
preliminary status of the analyses of the +−0 and +− channels using all available
LEP data is also presented. The contributions from the di
erent spin and helicity states
to the signal are determined by comparing the data to the MC prediction. The Q2-
dependence of the di
erential cross section is studied and the cross section measurement
is used to determine the two-photon width times branching fraction. When no signal is
observed in the region of a known meson, upper limits on this quantity are derived. Also
the possible production of glueball candidates is investigated.
