Abstract
We present a comparison of the strong couplings of b, c , and light ( u, d , and s ) quarks derived from multi-jet rates in flavor-tagged samples of hadronic Z 0 decays recorded with the SLC Large Detector at the SLAC Linear Collider. By comparing the rates of 3-jet events in these three samples we have extracted the Preliminary values of: α s ( uds )/ α s ( all ) = 0.96±0.03(stat.)±0.04(syst.)±0.02(theory), α s ( c )/ α s ( all ) = 1.16±0.11(stat.)± 0.10(syst.)±0.07(theory), α s ( b )/ α s ( all ) = 0.98±0.04(stat.)±0.08(syst.)±0.02(theory).
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