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Titolo:
The dependence of the anomalous J/psi suppression on the number of participant nucleons
Autore:
Abreu, MC; Alessandro, B; Alexa, C; Arnaldi, R; Atayan, M; Baglin, C; Baldit, A; Bedjidian, M; Beole, S; Boldea, V; Bordalo, P; Borges, G; Bussiere, A; Capelli, L; Castor, J; Castanier, C; Chaurand, B; Chevrot, I; Cheynis, B; Chiavassa, E; Cicalo, C; Claudino, T; Comets, MP; Constans, N; Constantinescu, S; Cortese, P; De Marco, N; De Falco, A; Dellacasa, G; Devaux, A; Dita, S; Drapier, O; Ducroux, L; Espagnon, B; Fargeix, J; Force, P; Grigorian, AA; Grigorian, S; Grossiord, JY; Guber, FF; Guichard, A; Gulkanyan, H; Hakobyan, R; Haroutunian, R; Idzik, M; Jouan, D; Karavitcheva, TL; Kluberg, L; Kurepin, AB; Le Bornec, Y; Lourenco, C; Macciotta, P; Mac Cormick, M; Marzari-Chiesa, A; Masera, M; Masoni, A; Monteno, M; Musso, A; Petiau, P; Piccotti, A; Pizzi, JR; Prino, F; Puddu, G; Quintans, C; Ramos, S; Ramello, L; Mendes, PR; Riccati, L; Romana, A; Santos, H; Saturnini, P; Scalas, E; Scomparin, E; Serci, S; Shahoyan, R; Sigaudo, F; Silva, S; Sitta, M; Sonderegger, P; Tarrago, X; Topilskaya, NS; Usai, GL; Vercellin, E; Villatte, L; Willis, N;
Indirizzi:
LIP, P-1000 Lisbon, Portugal LIP Lisbon Portugal P-1000LIP, P-1000 Lisbon, Portugal CNRS, LAPP, IN2P3, Annecy Le Vieux, France CNRS Annecy Le Vieux FranceCNRS, LAPP, IN2P3, Annecy Le Vieux, France Univ Clermont Ferrand, LPC, Aubiere, France Univ Clermont Ferrand Aubiere France mont Ferrand, LPC, Aubiere, France CNRS, IN2P3, Aubiere, France CNRS Aubiere FranceCNRS, IN2P3, Aubiere, France IFA, Bucharest, Romania IFA Bucharest RomaniaIFA, Bucharest, Romania Univ Cagliari, Ist Nazl Fis Nucl, Cagliari, Italy Univ Cagliari CagliariItaly gliari, Ist Nazl Fis Nucl, Cagliari, Italy CERN, Geneva, Switzerland CERN Geneva SwitzerlandCERN, Geneva, Switzerland INR, Moscow, Russia INR Moscow RussiaINR, Moscow, Russia Univ Paris 11, IPN, Orsay, France Univ Paris 11 Orsay FranceUniv Paris 11, IPN, Orsay, France CNRS, IN2P3, F-91405 Orsay, France CNRS Orsay France F-91405CNRS, IN2P3, F-91405 Orsay, France Ecole Polytech, LPNHE, Palaiseau, France Ecole Polytech Palaiseau France cole Polytech, LPNHE, Palaiseau, France Ecole Polytech, CNRS, IN2P3, F-91128 Palaiseau, France Ecole Polytech Palaiseau France F-91128 IN2P3, F-91128 Palaiseau, France Univ Turin, Ist Nazl Fis Nucl, Turin, Italy Univ Turin Turin ItalyUniv Turin, Ist Nazl Fis Nucl, Turin, Italy Univ Lyon 1, IPN, F-69622 Villeurbanne, France Univ Lyon 1 Villeurbanne France F-69622 PN, F-69622 Villeurbanne, France CNRS, IN2P3, Villeurbanne, France CNRS Villeurbanne FranceCNRS, IN2P3, Villeurbanne, France YerPhI, Yerevan, Armenia YerPhI Yerevan ArmeniaYerPhI, Yerevan, Armenia Univ Algarve, FCT, P-8000 Faro, Portugal Univ Algarve Faro Portugal P-8000 iv Algarve, FCT, P-8000 Faro, Portugal Univ Tecn Lisbon, Inst Super Tecn, P-1096 Lisbon, Portugal Univ Tecn Lisbon Lisbon Portugal P-1096 er Tecn, P-1096 Lisbon, Portugal Univ Piemonte Orientale, Alessandria, Italy Univ Piemonte Orientale Alessandria Italy Orientale, Alessandria, Italy Ist Nazl Fis Nucl, I-10125 Turin, Italy Ist Nazl Fis Nucl Turin Italy I-10125 azl Fis Nucl, I-10125 Turin, Italy Acad Min & Met, Fac Phys & Nucl Tech, Krakow, Poland Acad Min & Met Krakow Poland Met, Fac Phys & Nucl Tech, Krakow, Poland
Titolo Testata:
PHYSICS LETTERS B
fascicolo: 3-4, volume: 521, anno: 2001,
pagine: 195 - 203
SICI:
0370-2693(20011129)521:3-4<195:TDOTAJ>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
PB-PB INTERACTIONS; J-PSI-SUPPRESSION; TRANSVERSE ENERGY; 158 GEV/C; CERN-SPS; COLLISIONS; DECONFINEMENT; PATTERN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Abreu, MC LIP, P-1000 Lisbon, Portugal LIP Lisbon Portugal P-1000LIP, P-1000 Lisbon, Portugal
Citazione:
M.C. Abreu et al., "The dependence of the anomalous J/psi suppression on the number of participant nucleons", PHYS LETT B, 521(3-4), 2001, pp. 195-203

Abstract

The observation of an anomalous J/psi suppression in Pb-Pb collisions by the NA50 Collaboration can be considered as the most striking indication forthe deconfinement of quarks and gluons at SPS energies. In this Letter, wedetermine the J/psi suppression pattern as a function of the forward hadronic energy E-ZDC measured in a Zero Degree Calorimeter (ZDC). The direct connection between EZDC and the geometry of the collision allows us to calculate, within a Glauber approach, the precise relation between the number of participant nucleons N-part and E-ZDC. Then, we check if the experimental data can be better explained by a sudden or a smooth onset of the anomalous J/psi suppression as a function of the number of participants. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 29/11/20 alle ore 15:48:18