Measurement of the Electron Asymmetry in the Beta Decay of PolarizedΣ−Hyperons.

and E. C. Swallow Department of Physics, Elmhurst College, Elmhurst, Illinois ;;O&; DSA and Enrico Fermi Institute, Univ. of Chicago, Chicago, Illinois and J. P. Berge, A. E. Brenner, P.'Grafstrom, E. Jastrzembski, J. Lath, J. Mariner, R. Raja, and V. J. Smith Fermi National Accelerator Laboratory, Batavia, Illinois 60510 USA and E. HcCliment and C. Newsom Department of Physics, University of Iowa, Iowa City, Iowa 52242 USA and E. W. Anderson Department of Physics, Iowa State University, Ames, Iowa 50011 USA and ~A. S. Denisov, V. T. Grachev, A. V. Kulikov, V. A. Schegelsky, D. M. Seliverstov, N. N. Smirnov, N. K. Terentyev, I. I. Tkatch, and A. Vorobyov Leningrad Nuclear Physics Institute, Leningrad, USSR and P. S. Cooper, P. Razis, and L. J. Teig J. W. Gibbs Laboratory, Yale University, New Haven, Connecticut 06511 USA