Abstract
Results on hadronic final states in e/sup +/e/sup -/ annihilation are reported. The data were collected with the MARK II detector at the PEP storage ring at the Stanford Linear Accelerator Center, operating at a center-of-mass energy of ..sqrt..s = 20 GeV. The MARK II detector, a 4.5 KG solenoid with cylindrical drift chambers, surrounded by a liquid argon calorimeter, has been described in detail. Hadronic events are selected by applying several cuts. There have to be at least 5 charged particles, each with momentum greater than 100 MeV, in an event. The total visible energy has to be larger than 8 GeV (or 15 Gev in the case of the energy correlation). The vertex position has to coincide with the beam crossing point. The data used for this report correspond to a total integrated luminosity of about 15 pb/sup -1/ collected in spring 1981.
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