QCD with SLD

We present selected new results on strong interaction physics from the SLD experiment at the SLAC Linear Collider (SLC), symmetry tests of bb̄g vertex, the rate of secondary bb̄ production via gluon splitting, the B hadron energy spectrum and rapidity correlations between identified charged hadrons. The parity violation in Z → bb̄g decays is consistent with electroweak theory plus QCD. New tests of Tand CP-conservation at the bbg vertex are performed. A new measurement of the rate of gluon splitting into bb̄ pairs yields gbb̄ = 0.00307± 0.00071(stat.)± 0.00066(syst.) (Preliminary). The B hadron energy spectrum is measured using a new inclusive technique, allowing tests of predictions for its shape and a measurement of 〈xB〉 = 0.714± 0.005(stat.)± 0.007(syst.) (Preliminary). A study of correlations in rapidity between pairs of identified π, K and p/p̄ confirms that strangeness and baryon number are conserved locally, and shows local charge conservation between meson-baryon and strange-nonstrange pairs. Flavor-dependent long-range correlations are observed for all combinations of these hadron species. The first study of correlations using signed rapidities is done and find the first direct observation of baryon number ordering along the qq̄ axis. Presented at the XXIX International Symposium on Multiparticle Dynamics (ISMD99) Brown University, Providence, USA August 9-13, 1999 Work supported by Department of Energy contract DE–AC03–76SF00515.