Multiplicity of charged particles in Pb–Pb collisions at SPS energies

<B>NA57 Collaboration</B>; F Antinori; P Bacon; A Badalà; R Barbera; A Belogianni; A Bhasin; I J Bloodworth; M Bombara; G E Bruno; S A Bull; R Caliandro; M Campbell; W Carena; N Carrer; R F Clarke; A Dainese; A P de Haas; P C de Rijke; D Di Bari; S Di Liberto; R Divià; D Elia; D Evans; G A Feofilov; R A Fini; P Ganoti; B Ghidini; G Grella; H Helstrup; K F Hetland; A K Holme; A Jacholkowski; G T Jones; P Jovanovic; A Jusko; R Kamermans; J B Kinson; K Knudson; A A Kolozhvari; V Kondratiev; I Králik; A Kravčáková; P Kuijer; V Lenti; R Lietava; G Løvhøiden; V Manzari; G Martinská; M A Mazzoni; F Meddi; A Michalon; M Morando; E Nappi; F Navach; P I Norman; A Palmeri; G S Pappalardo; B Pastirčák; J Pišút; N Pišútová; R J Platt; F Posa; E Quercigh; F Riggi; D Röhrich; G Romano; K Šafařík; L Šándor; E Schillings; G Segato; M Sené; R Sené; W Snoeys; F Soramel; M Spyropoulou- Stassinaki; P Staroba; T A Toulina; R Turrisi; T S Tveter; J Urbán; F F Valiev; A van den Brink; P van de Ven; P Vande Vyvre; N van Eijndhoven; J van Hunen; A Vascotto; T Vik; O Villalobos Baillie; L Vinogradov; T Virgili; M F Votruba; J Vrláková; P Závada

doi:10.1088/0954-3899/31/5/004

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Journal of Physics G: Nuclear and Particle Physics

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Journal of Physics G: Nuclear and Particle Physics Volume 31 Number 5 Create an alert RSS this journal

NA57 Collaboration et al 2005 J. Phys. G: Nucl. Part. Phys. 31 321 doi:10.1088/0954-3899/31/5/004

Multiplicity of charged particles in Pb–Pb collisions at SPS energies

NA57 Collaboration, F Antinori¹, P Bacon², A Badalà³, R Barbera³, A Belogianni⁴, A Bhasin², I J Bloodworth², M Bombara⁵, G E Bruno⁶, S A Bull², R Caliandro⁶, M Campbell⁷, W Carena⁷, N Carrer⁷, R F Clarke², A Dainese¹, A P de Haas⁸, P C de Rijke⁸, D Di Bari⁶, S Di Liberto⁹, R Divià⁷, D Elia⁶, D Evans², G A Feofilov¹⁰, R A Fini⁶, P Ganoti⁴, B Ghidini⁶, G Grella¹¹, H Helstrup¹², K F Hetland¹², A K Holme¹³, A Jacholkowski³, G T Jones², P Jovanovic², A Jusko², R Kamermans⁸, J B Kinson², K Knudson⁷, A A Kolozhvari¹⁰, V Kondratiev¹⁰, I Králik⁵, A Kravčáková¹⁴, P Kuijer⁸, V Lenti⁶, R Lietava², G Løvhøiden¹³, V Manzari⁶, G Martinská¹⁴, M A Mazzoni⁹, F Meddi⁹, A Michalon¹⁵, M Morando¹, E Nappi⁶, F Navach⁶, P I Norman², A Palmeri³, G S Pappalardo³, B Pastirčák⁵, J Pišút¹⁶, N Pišútová¹⁶, R J Platt², F Posa⁶, E Quercigh¹, F Riggi³, D Röhrich¹⁷, G Romano¹¹, K Šafařík⁷, L Šándor⁵, E Schillings⁸, G Segato¹, M Sené¹⁸, R Sené¹⁸, W Snoeys⁷, F Soramel^1,20, M Spyropoulou- Stassinaki⁴, P Staroba¹⁹, T A Toulina¹⁰, R Turrisi¹, T S Tveter¹³, J Urbán¹⁴, F F Valiev¹⁰, A van den Brink⁸, P van de Ven⁸, P Vande Vyvre⁷, N van Eijndhoven⁸, J van Hunen⁷, A Vascotto⁷, T Vik¹³, O Villalobos Baillie², L Vinogradov¹⁰, T Virgili¹¹, M F Votruba², J Vrláková¹⁴ and P Závada¹⁹

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tiziano.virgili@sa.infn.it

¹ University of Padua and INFN, Padua, Italy
² University of Birmingham, Birmingham, UK
³ University of Catania and INFN, Catania, Italy
⁴ Physics Department, University of Athens, Athens, Greece
⁵ Institute of Experimental Physics, Slovak Academy of Science, Košice, Slovakia
⁶ Dipartimento IA di Fisica dell'Università e del Politecnico di Bari and INFN, Bari, Italy
⁷ CERN, European Laboratory for Particle Physics, Geneva, Switzerland
⁸ Utrecht University and NIKHEF, Utrecht, The Netherlands
⁹ University 'La Sapienza' and INFN, Rome, Italy
¹⁰ State University of St Petersburg, St Petersburg, Russia
¹¹ Dipartimento di Scienze Fisiche 'E. R. Caianiello' dell'Università and INFN, Salerno, Italy
¹² Høgskolen i Bergen, Bergen, Norway
¹³ Fysisk Institutt, Universitetet i Oslo, Oslo, Norway
¹⁴ P.J. Šafárik University, Košice, Slovakia
¹⁵ IReS/ULP, Strasbourg, France
¹⁶ Comenius University, Bratislava, Slovakia
¹⁷ Fysisk Institutt, Universitetet i Bergen, Bergen, Norway
¹⁸ Collège de France, Paris, France
¹⁹ Institute of Physics, Prague, Czech Republic
²⁰ Permanent address: University of Udine, Udine, Italy

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Abstract References Cited By

The multiplicity of charged particles in the central rapidity region has been measured by the NA57 experiment in Pb–Pb collisions at the CERN SPS at two beam momenta: 158 A GeV/c and 40 A GeV/c. The value of dN_ch/dη at the maximum has been determined and its behaviour as a function of centrality has been studied in the centrality range covered by NA57 (about 50% of the inelastic cross section). The multiplicity increase is compatible with a logarithmic dependence on the centre of mass energy. The results are compared with those from other experiments and with the VENUS and RQMD models.

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