[1] UNIV BIRMINGHAM,SCH PHYS & SPACE RES,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND
[2] UNIV BOLOGNA,DIPARTIMENTO FIS,I-40126 BOLOGNA,ITALY
[3] INFN,I-40126 BOLOGNA,ITALY
[4] UNIV CALIF RIVERSIDE,DEPT PHYS,RIVERSIDE,CA 92521
[5] UNIV CAMBRIDGE,CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND
[6] CERN,EUROPEAN ORG PARTICLE PHYS,CH-1211 GENEVA 23,SWITZERLAND
[7] ENRICO FERMI INST,CHICAGO,IL 60637
[8] UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637
[9] UNIV FREIBURG,FAK PHYS,W-7800 FREIBURG,GERMANY
[10] UNIV HEIDELBERG,INST PHYS,W-6900 HEIDELBERG,GERMANY
[11] UNIV LONDON,QUEEN MARY & WESTFIELD COLL,LONDON E1 4NS,ENGLAND
[12] UNIV LONDON UNIV COLL,LONDON WC1E 6BT,ENGLAND
[13] UNIV MARYLAND,DEPT PHYS & ASTRON,COLL PK,MD 20742
[14] UNIV MONTREAL,PHYS NUCL LAB,MONTREAL H3C 3J7,QUEBEC,CANADA
[15] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND
[16] CENS,F-91191 GIF SUR YVETTE,FRANCE
[17] UNIV TOKYO,INT CTR ELEMENTARY PARTICLE PHYS,TOKYO 113,JAPAN
[18] UNIV TOKYO,DEPT PHYS,TOKYO 113,JAPAN
[19] WEIZMANN INST SCI,DEPT NUCL PHYS,IL-76100 REHOVOT,ISRAEL
[20] UNIV HAMBURG,DESY,INST EXPTL PHYS 2,W-2000 HAMBURG 52,GERMANY
[21] UNIV VICTORIA,DEPT PHYS,VICTORIA V8W 3P6,BC,CANADA
[22] UNIV BRITISH COLUMBIA,DEPT PHYS,VANCOUVER V6T 1Z1,BC,CANADA