ψ′ production in Pb–Pb collisions at 158 GeV/nucleon

B. Alessandro; C. Alexa; R. Arnaldi; M. Atayan; S. Beolè; V. Boldea; P. Bordalo; G. Borges; J. Castor; B. Chaurand; B. Cheynis; E. Chiavassa; C. Cicalò; M.P. Comets; S. Constantinescu; P. Cortese; A. De Falco; N. De Marco; G. Dellacasa; A. Devaux; S. Dita; O. Drapier; J. Fargeix; P. Force; M. Gallio; C. Gerschel; P. Giubellino; M.B. Golubeva; M. Gonin; A. Grigoryan; J.Y. Grossiord; F.F. Guber; A. Guichard; H. Gulkanyan; M. Idzik; D. Jouan; T.L. Karavicheva; L. Kluberg; A.B. Kurepin; Y. Le Bornec; C. Lourenço; M. Mac Cormick; A. Marzari-Chiesa; M. Masera; A. Masoni; M. Monteno; A. Musso; P. Petiau; A. Piccotti; J.R. Pizzi; F. Prino; G. Puddu; C. Quintans; L. Ramello; S. Ramos; L. Riccati; A. Romana; H. Santos; P. Saturnini; E. Scomparin; S. Serci; R. Shahoyan; M. Sitta; P. Sonderegger; X. Tarrago; N.S. Topilskaya; G.L. Usai; E. Vercellin; L. Villatte; N. Willis

doi:10.1140/epjc/s10052-006-0153-y

EPJ

ψ^′ production in Pb–Pb collisions at 158 GeV/nucleon

B. Alessandro¹⁰, C. Alexa³, R. Arnaldi¹⁰, M. Atayan¹², S. Beolè¹⁰, V. Boldea³, P. Bordalo⁶, G. Borges⁶, J. Castor², B. Chaurand⁹, B. Cheynis¹¹, E. Chiavassa¹⁰, C. Cicalò⁴, M.P. Comets⁸, S. Constantinescu³, P. Cortese¹, A. De Falco⁴, N. De Marco¹⁰, G. Dellacasa¹, A. Devaux², S. Dita³, O. Drapier⁹, J. Fargeix², P. Force², M. Gallio¹⁰, C. Gerschel⁸, P. Giubellino¹⁰, M.B. Golubeva⁷, M. Gonin⁹, A. Grigoryan¹², J.Y. Grossiord¹¹, F.F. Guber⁷, A. Guichard¹¹, H. Gulkanyan¹², M. Idzik¹⁰, D. Jouan⁸, T.L. Karavicheva⁷, L. Kluberg⁹, A.B. Kurepin⁷, Y. Le Bornec⁸, C. Lourenço⁵, M. Mac Cormick⁸, A. Marzari-Chiesa¹⁰, M. Masera¹⁰, A. Masoni⁴, M. Monteno¹⁰, A. Musso¹⁰, P. Petiau⁹, A. Piccotti¹⁰, J.R. Pizzi¹¹, F. Prino¹⁰, G. Puddu⁴, C. Quintans⁶, L. Ramello¹, S. Ramos⁶, L. Riccati¹⁰, A. Romana⁹, H. Santos⁶^*, P. Saturnini², E. Scomparin¹⁰, S. Serci⁴, R. Shahoyan⁶, M. Sitta¹, P. Sonderegger⁵, X. Tarrago⁸, N.S. Topilskaya⁷, G.L. Usai⁴, E. Vercellin¹⁰, L. Villatte⁸, N. Willis⁸ and The NA50 Collaboration

¹ Universitá del Piemonte Orientale, Alessandria and INFN-Torino, Alessandria, Italy
² LPC, Univ. Blaise Pascal and CNRS-IN2P3, Aubière, France
³ IFA, Bucharest, Romania
⁴ Università di Cagliari/INFN, Cagliari, Italy
⁵ CERN, Geneva, Switzerland
⁶ LIP, Lisbon, Portugal
⁷ INR, Moscow, Russia
⁸ IPN, Univ. de Paris-Sud and CNRS-IN2P3, Orsay, France
⁹ LLR, Ecole Polytechnique and CNRS-IN2P3, Palaiseau, France
¹⁰ Università di Torino/INFN, Torino, Italy
¹¹ IPN, Univ. Claude Bernard Lyon-I and CNRS-IN2P3, Villeurbanne, France
¹² YerPhI, Yerevan, Armenia

Received: 22 May 2006
Revised: 25 September 2006
Published online: 21 November 2006

Abstract

ψ^′ production is studied in Pb–Pb collisions at 158 GeV/c per nucleon incident momentum. Absolute cross-sections are measured and production rates are investigated as a function of the centrality of the collision. The results are compared with those obtained for lighter colliding systems and also for the J/ψ meson produced under identical conditions.

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EPJ

ψ′ production in Pb–Pb collisions at 158 GeV/nucleon

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ψ^′ production in Pb–Pb collisions at 158 GeV/nucleon