The Mark II experiment first started taking data in 1978 at the SLAC SPEAR storage ring. It was the first e+edetector with a large, many layer cylindrical drift chamber (CDC) and a large liquid argon calorimeter!” After two years at SPEAR, it was moved to the PEP storage ring, where it was upgraded a year later with a seven layer precision vertex drift chamber!’ located between the CDC and the ...

Results on t/decays from Mark III are presented. With a data sample of 240,000 @events, we measure w’+x+K-~, @+rlv, t/+~~, w’+‘y4x*, @+@x*, and perform a search for -t/-+pz Implications of our measurements are discussed.

Walter Zawojski's photo of the SPEAR Mark I

Preliminary results from the Mark II and Crystal Ball experiments on radiative transitions from the $ to ordinary hadrons are presented. In addition to the previously observed transitions to the n, n'(958), and f(1270), both groups observe a transition to a state which is tentatively identified as the E(1420).

A New Psychology? iii EDITOR'S INTRODUCTION Molecules and Memory 1. FRANCIS 0. SCHMITT Memories, Molecules and Minds 8 JAMES V. MCCONNELL The Physiology of the Brain in 1.965 1.8 DAVID H. HUBEL The Death of Dualism 24 ALFRED L. GOLDBERG Machines That Can Think 36 STEPHEN F. JENCKS The Whole Or Its Parts? 46 PHILIP J. STONE Love in a Test Tube 49 JOEL E. COHEN _ Psychophysiology and the 57 RICHA...

We have searched 310 hadronic 2 decays for evidence of new quarks and leptons. We set lower mass limits of 40.7 GeV/c2 for top, 45 GeV/c2 for bottom prime, and 42.4 GeV/c2 for a heavy neutral lepton assuming their decays are predominantly via the charged current. Limits are also set for other decay modes and for mixtures of decay modes. Extended version of paper presented at the International E...

A prominent theoretical controversy in the compensating differentials literature concerns unobservable individual productivity. Competing models yield opposite predictions depending on whether the unobservable productivity is safety-related skill or productivity generally. Using five panel waves and several new measures of worker fatality risks, first-difference estimates imply that omitting in...