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The total hadronic cross section in e + e - annihilation has been measured at s = 57.77 GeV using 290 pb -1 data sample collected with the VENUS detector at KEK TRISTAN. The cross section obtained is 140.3 +/-1.8 pb for s'/s=<0.5, where s' is the square of the invariant mass of the final state hadrons. The present result together with the recent results from the LEP...
The charged-particle multiplicity is measured for b-quark and light-quark (u, d, s) events in e + e - annihilation at s = 58 GeV. Two independent methods, lepton tagging and decay-length tagging, are applied to enrich b-quark events. These methods provide event samples having different concentrations of b-quark events. The mean charged multiplicity is measured to be 19.38 ± 0.27...
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