Cross sections for J/psi,psi' source and Drell-Yan production in Pb+Pb collisions at 158×A GeV/c are presented and compared with results obtained by the NA38 and NA51 collaborations. The Pb+Pb data have been collected by the NA50 collaboration using the NA38 dimuon spectrometer. The Drell-Yan mechanism is found to scale as (Aprojectile · Btarget) in p+Btarget and Aprojectile+Btarget collisions including Pb+Pb collisions. Regarding J/psi source, an anomalous suppression is observed in Pb+Pb collisions with respect to the suppression observed in p+Btarget, O+Btarget and S+U collisions. The cross section ratios psi/psi' source are similar in Pb+Pb and S+U collisions.

Anomalous suppression in Pb+Pb collisions at 158×A GeV/c / Michel Gonin;M.C. Abreu;C. Alexa;B. Alessandro;J. Astruc;C. Baglin;A. Baldit;F. Bellaiche;M. Bedjidian;S. Beole;A. Borhani;V. Boldea;P. Bordalo;A. Bussière;V. Capony;J. Castor;M. Cerú;T. Chambon;B. Chaurand;I. Chevrot;B. Cheynis;E. Chiavassa;C. Cicalo;S. Constantinescu;W. Dabrowski;A. De Falco;G. Dellacasa;N. De Marco;A. Devaux;S. Dita;O. Drapier;B. Espagnon;J. Fargeix;F. Fleuret;P. Force;M. Gallio;Y.K. Gavrilov;C. Gerschel;P. Giubellino;M.B. Golubeva;M. Gonin;P. Gorodetzky;J.Y. Grossiord;P. Guaita;F.F. Guber;A. Guichard;R. Haroutunian;M. Idzik;D. Jouan;T.L. Karavitcheva;R. Kossakowski;L. Kluberg;A.B. Kurepin;Y. Le Bornec;G. Landaud;C. Lourenço;L. Luquin;P. Macciotta;F. Ohlsson-Malek;A. Marzari-Chiesa;M. Masera;A. Masoni;S. Mourgues;A. Musso;P. Petiau;W.L. Prado da Silva;A. Piccotti;J.R. Pizzi;G. Puddu;C. Racca;L. Ramello;S. Ramos;P. Rato-Mendes;L. Riccati;A. Romana;M.S. Sartori;P. Saturnini;E. Scomparin;R. Shaoian;S. Silva;S. Serci;P. Sonderegger;X. Tarrago;P. Temnikov;N.S. Topilskaya;G. Usai;E. Vercellin;N. Willis. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - 610(1996), pp. 404-417. ((Intervento presentato al convegno 12th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 96) tenutosi a Heidelberg, Germany nel 20-24 May 1996..

Anomalous suppression in Pb+Pb collisions at 158×A GeV/c

BEOLE', Stefania;CHIAVASSA, Emilio Luciano;GALLIO, Mauro;MASERA, Massimo;VERCELLIN, Ermanno;
1996

Abstract

Cross sections for J/psi,psi' source and Drell-Yan production in Pb+Pb collisions at 158×A GeV/c are presented and compared with results obtained by the NA38 and NA51 collaborations. The Pb+Pb data have been collected by the NA50 collaboration using the NA38 dimuon spectrometer. The Drell-Yan mechanism is found to scale as (Aprojectile · Btarget) in p+Btarget and Aprojectile+Btarget collisions including Pb+Pb collisions. Regarding J/psi source, an anomalous suppression is observed in Pb+Pb collisions with respect to the suppression observed in p+Btarget, O+Btarget and S+U collisions. The cross section ratios psi/psi' source are similar in Pb+Pb and S+U collisions.
12th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 96)
Heidelberg, Germany
20-24 May 1996.
610
404
417
Michel Gonin;M.C. Abreu;C. Alexa;B. Alessandro;J. Astruc;C. Baglin;A. Baldit;F. Bellaiche;M. Bedjidian;S. Beole;A. Borhani;V. Boldea;P. Bordalo;A. Bussière;V. Capony;J. Castor;M. Cerú;T. Chambon;B. Chaurand;I. Chevrot;B. Cheynis;E. Chiavassa;C. Cicalo;S. Constantinescu;W. Dabrowski;A. De Falco;G. Dellacasa;N. De Marco;A. Devaux;S. Dita;O. Drapier;B. Espagnon;J. Fargeix;F. Fleuret;P. Force;M. Gallio;Y.K. Gavrilov;C. Gerschel;P. Giubellino;M.B. Golubeva;M. Gonin;P. Gorodetzky;J.Y. Grossiord;P. Guaita;F.F. Guber;A. Guichard;R. Haroutunian;M. Idzik;D. Jouan;T.L. Karavitcheva;R. Kossakowski;L. Kluberg;A.B. Kurepin;Y. Le Bornec;G. Landaud;C. Lourenço;L. Luquin;P. Macciotta;F. Ohlsson-Malek;A. Marzari-Chiesa;M. Masera;A. Masoni;S. Mourgues;A. Musso;P. Petiau;W.L. Prado da Silva;A. Piccotti;J.R. Pizzi;G. Puddu;C. Racca;L. Ramello;S. Ramos;P. Rato-Mendes;L. Riccati;A. Romana;M.S. Sartori;P. Saturnini;E. Scomparin;R. Shaoian;S. Silva;S. Serci;P. Sonderegger;X. Tarrago;P. Temnikov;N.S. Topilskaya;G. Usai;E. Vercellin;N. Willis
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/111608
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