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EnglishCharmonium suppression in Pb-Pb collisions at 158 GeV/c per nucleon is investigated in detail with the study of the transverse momentum distributions of J/psi as a function of the centrality of the collision. It is shown that the observed J/psi suppression in Pb-Pb interactions is particularly significant mainly at low transverse momentum where it strongly depends on centrality. For peripheral Pb-Pb collisions, the transverse momentum dependence of the J/psi cross section is, as a function of centrality, qualitatively similar to the dependence observed in p-A and S-U collisions. Comparing peripheral and central Pb-Pb collisions, the data show a relative suppression in the whole p(T) range although its amplitude significantly decreases with increasing p(T) and becomes almost p(T) independent for the highest p(T) values. RI Alexa, Calin/F-6345-2010; Cortese, Pietro/G-6754-2012; beole', stefania/G-9353-2012
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| Titolo: | Transverse momentum dependence of charmonium suppression in Pb - Pb collisions at the CERN SPS |
| Autori: | |
| Data di pubblicazione: | 2005 |
| Rivista: | |
| Citazione: | Transverse momentum dependence of charmonium suppression in Pb - Pb collisions at the CERN SPS / Alessandro B; Alexa C; Arnaldi R; Atayan M; Beole S; Boldea V; Bordalo P; Borges G; Castanier C; Castor J; Chaurand B; Cheynis B; Chiavassa E; Cicalo C; Comets MP; Constantinescu S; Cortese P; De Falco A; De Marco N; Dellacasa G; Devaux A; Guic AAGSGFFCA; Fargeix J; Force P; Gallio M; Gerschel C; Giubellino P; Golubeva MB; Grigorian AA; Grigorian S; Guber FF; Guichard A; Gulkanyan H; Idzik M; Jouan D; Karavitcheva TL; Kluberg L; Kurepin AB; Le Bornec Y; Lourenco C; 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; Ramello L; Ramos S; Riccati L; Santos H; Saturnini P; Scomparin E; Serci S; Shahoyan R; Sigaudo E; Sitta M; Sonderegger P; Tarrago X; Topilskaya NS; Usai G; Vercellin E; Villatte L; Willis N; Wu T. - 749(2005), pp. 243C-250C. ((Intervento presentato al convegno 18th International Nuclear Physics Divisional Conference of the European-Physical-Society tenutosi a Prague, CZECH REPUBLIC nel AUG 23-29, 2004. |
| Abstract: | Charmonium suppression in Pb-Pb collisions at 158 GeV/c per nucleon is investigated in detail with the study of the transverse momentum distributions of J/psi as a function of the centrality of the collision. It is shown that the observed J/psi suppression in Pb-Pb interactions is particularly significant mainly at low transverse momentum where it strongly depends on centrality. For peripheral Pb-Pb collisions, the transverse momentum dependence of the J/psi cross section is, as a function of centrality, qualitatively similar to the dependence observed in p-A and S-U collisions. Comparing peripheral and central Pb-Pb collisions, the data show a relative suppression in the whole p(T) range although its amplitude significantly decreases with increasing p(T) and becomes almost p(T) independent for the highest p(T) values. RI Alexa, Calin/F-6345-2010; Cortese, Pietro/G-6754-2012; beole', stefania/G-9353-2012 |
| Handle: | http://hdl.handle.net/11584/26504 |
| ISBN: | 0375-9474 |
| Tipologia: | 4.1 Contributo in Atti di convegno |
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