PSI' AND J PSI PRODUCTION IN P-U AND S-U COLLISIONS AT 200 GEV/NUCLEON/

Authors
ABREU MC BAGLIN C BALDIT A BARRIERE C BEDJIDIAN M BORDALO P BUSSIERE A CASTOR J CHAMBON T CHAURAND B CONTARDO D DESCROIX E DEVAUX A DRAPIER O ESPAGNON B FARGEIX J FERREIRA R FORCE P FREDJ L GAGO J GERSCHEL C GORODETZKY P GROSDIDIER B GROSSIORD JY GUICHARD A GUILLAUD JP HAROUTUNIAN R JOUAN D KLUBERG L KOSSAKOWSKI R LANDAUD G LAZIC D LIAUD P LOURENCO C LUQUIN L MALEK F MANDRY R MAZINI R PERALTA L PIZZI JR RACCA C RAMOS S ROMANA A RONCEUX B SALMERON R SILVA S SONDEREGGER P TARRAGO X VARELA J VAZEILLE F
Citation
Mc. Abreu et al., PSI' AND J PSI PRODUCTION IN P-U AND S-U COLLISIONS AT 200 GEV/NUCLEON/, Nuclear physics. A, 566, 1994, pp. 30000371-30000374
Citations number
11
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. A → ACNP
ISSN journal
03759474
Volume
566
Year of publication
1994
Pages
30000371 - 30000374
Database
ISI
SICI code
0375-9474(1994)566:<30000371:PAJPPI>2.0.ZU;2-W
Abstract
Production and decay into two muons of psi' and J/psi mesons is studie d in p-U and S-U interactions at 200 GeV/nucleon. The ratio B(mumu)sig ma(psi')/B(mumu)sigma(J/psi) is found to be 0.0201 +/- 0.0044 +/- 0.00 20 in p-U and 0.0093 +/- 0.0011 +/- 0.0013 in S-U. For S-U interaction s, this ratio decreases by about 40% with increasing transverse energy . Our p-U result confirms previous measurements which show that the re lative production of psi' and J/psi in p-A interactions is independent of A. The results are discussed in the frame of QGP formation and fin al state absorption.