Measurement of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>Σ</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow></math></span> Production Polarization and Magnetic Moment

Y. W. Wah; T. R. Cardello; P. S. Cooper; L. J. Teig; J. L. Thron; C. Ankenbrandt; J. P. Berge; A. E. Brenner; J. Butler; K. Doroba; J. Lach; P. Laurikainen; J. Marriner; E. McCliment; E. W. Anderson; A. Breakstone

doi:10.1103/PhysRevLett.55.2551

Measurement of $Σ^{-}$ Production Polarization and Magnetic Moment

Y. W. Wah, T. R. Cardello, P. S. Cooper, L. J. Teig, J. L. Thron, C. Ankenbrandt, J. P. Berge, A. E. Brenner, J. Butler, K. Doroba, J. Lach, P. Laurikainen, J. Marriner, E. McCliment, E. W. Anderson, and A. Breakstone

Phys. Rev. Lett. 55, 2551 – Published 2 December 1985

Abstract

We have measured the production polarization of 265- and 310-GeV/c $Σ^{-}$ in the inclusive reaction $p + Cu \to Σ^{-} + X$ using 400-GeV/c protons. The polarization was analyzed via the asymmetry in the weak decay $Σ^{-} \to n + π^{-}$ , and has typical values of +0.20 with respect to the direction of the cross product of the incident-proton and $Σ^{-}$ momenta. Using the spin-precession technique, we have determined the $Σ^{-}$ magnetic moment to be -1.23±0.03±0.03 nuclear magnetons, where the statistical and systematic errors are shown separately.

Received 11 March 1985

DOI:https://doi.org/10.1103/PhysRevLett.55.2551

Authors & Affiliations

Y. W. Wah^*, T. R. Cardello^†, P. S. Cooper, L. J. Teig^‡, and J. L. Thron^§

J. W. Gibbs Laboratory, Yale University, New Haven, Connecticut 06511

C. Ankenbrandt, J. P. Berge, A. E. Brenner, J. Butler, K. Doroba^∥, J. Lach, P. Laurikainen^¶, and J. Marriner

Fermi National Accelerator Laboratory, Batavia, Illinois 60510

E. McCliment

Department of Physics, University of Iowa, Iowa City, Iowa 52242

E. W. Anderson and A. Breakstone^**

Department of Physics, Iowa State University, Ames, Iowa 50011

^*Present address: Enrico Fermi Institute, University of Chicago, Chicago, Ill. 60637.
^†Present address: 15 East 11th Street, New York, N.Y. 10003.
^‡Present address: MITRE Corp., Bedford, Mass. 01730.
^§Present address: Argonne National Laboratory, Argonne, Ill. 60439.
^∥Present address: Institute of Physics, Warsaw University, Warsaw, Poland.
^¶Present address: Department of High Energy Physics, University of Helsinki, Helsinki, Finland.
^**Present address: Department of Physics and Astronomy, University of Hawaii, Honolulu, Haw. 96822.