Abstract
We searched for signatures of new stable particles in e + e − annihilation using the TOPAZ detector at TRISTAN between √ s = 52 and 60 GeV. The search made use of the particle identification by the Time Projection Chamber (TPC). We set new limits on the pair production of new stable charged particles with spins 0 and 1 2 , and charges between 2 3 and 4 3 . The limits on the production cross section were translated to the lower mass limits of hypothetical new particles, SUSY particles, free quarks and heavy leptons.
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