Vladimir Chaloupka and Claude Bricman

• CERN, 1211 Genève 23, Switzerland

Angela Barbaro-Galtieri, Denyse M. Chew^*, Robert L. Kelly, Thomas A. Lasinski^†, Alan Rittenberg, Arthur H. Rosenfeld, Thomas G. Trippe, Fumiyo Uchiyama, and George P. Yost^‡

• Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720

Naomi Barash-Schmidt

• Brandeis University, Waltham, Massachusetts 02154

Matts Roos

• Department of Nuclear Physics, University of Helsinki, Helsinki 17, Finland

• ^*On leave of absence from University of Paris VI, Paris, France.
• ^†Presently at Stanford Linear Accelerator Center, Stanford, California 94305, USA.
• ^‡The Berkeley Particle Data Center is jointly supported by the U.S. Energy Research and Development Administration, the Office of Standard Reference Data of the National Bureau of Standards, and the National Science Foundation.