https://doi.org/10.1140/epjc/s10052-006-0153-y
Regular Article - Experimental Physics
ψ′ production in Pb–Pb collisions at 158 GeV/nucleon
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
* e-mail: helena@lip.pt
Received:
22
May
2006
Revised:
25
September
2006
Published online:
21
November
2006
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.
© Springer-Verlag Berlin Heidelberg, 2007