ANOMALOUS J PSI SUPPRESSION IN PB+PB COLLISIONS AT 158XA GEV/C/

Authors
ABREU MC ALEXA C ALESSANDRO B ASTRUC J BAGLIN C BALDIT A BELLAICHE F BEDJIDIAN M BEOLE S BORHANI A BOLDEA V BORDALO P BUSSIERE A CAPONY V CASTOR J CERU M CHAMBON T CHAURAND B CHEVROT I CHEYNIS B CHIAVASSA E CICALO C CONSTANTINESCU S DABROWSKI W DEFALCO A DELLACASA G DEMARCO N DEVAUX A DITA S DRAPIER O ESPAGNON B FARGEIX J FLEURET F FORCE P GALLIO M GAVRILOV YK GERSCHEL C GIUBELLINO P GOLUBEVA MB GONIN M GORODETZKY P GROSSIORD JY GUAITA P GUBER FF GUICHARD A HAROUTUNIAN R IDZIK M JOUAN D KARAVITCHEVA TL KOSSAKOWSKI R KLUBERG L KUREPIN AB LEBORNEC Y LANDAUD G LOURENCO C LUQUIN L MACCIOTTA P OHLSSONMALEK F MARZARICHIESA A MASERA M MASONI A MOURGUES S MUSSO A PETIAU P DASILVA WLP PICCOTTI A PIZZI JR PUDDU G RACCA C RAMELLO L RAMOS S RATOMENDES P RICCATI L ROMANA A SARTORI MS SATURNINI P SCOMPARIN E SHAOIAN R SILVA S SERCI S SONDEREGGER P TARRAGO X TEMNIKOV P TOPILSKAYA NS USAI G VERCELLIN E WILLIS N
Citation
Mc. Abreu et al., ANOMALOUS J PSI SUPPRESSION IN PB+PB COLLISIONS AT 158XA GEV/C/, Nuclear physics. A, 610, 1996, pp. 404-417
Citations number
26
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. A → ACNP
ISSN journal
03759474
Volume
610
Year of publication
1996
Pages
404 - 417
Database
ISI
SICI code
0375-9474(1996)610:<404:AJPSIP>2.0.ZU;2-W
Abstract
Cross sections for J/psi<,psi>' and Drell-Yan production in Pb+Pb coll isions at 158xA GeV/c are presented and compared with results obtained by the NA38 and NA51 collaborations. The Pb+Pb data have been collect ed by the NA50 collaboration using the NA38 dimuon spectrometer. The D rell-Yan mechanism is found to scale as (A(projectile). B-target) in p +B-target and A(projectile)+B-target collisions including Pb+Pb collis ions. Regarding J/psi, an anomalous suppression is observed in Pb+Pb c ollisions with respect to the suppression observed in p+B-target, O+B- target and S+U collisions. The cross section ratios psi'/(J/psi) are s imilar in Pb+Pb and S+U collisions.