Study of the transverse mass spectra of strange particles in Pb–Pb collisions at 158 A GeV/c

The NA57 Collaboration; 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:10.1088/0954-3899/30/6/011

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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 30 Number 6 Create an alert RSS this journal

The NA57 Collaboration et al 2004 J. Phys. G: Nucl. Part. Phys. 30 823 doi:10.1088/0954-3899/30/6/011

Study of the transverse mass spectra of strange particles in Pb–Pb collisions at 158 A GeV/c

The 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 Grella¹, 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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giuseppe.bruno@cern.ch

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 NA57 experiment has collected high statistics, high purity samples of K⁰_S and Λ, Ξ and Ω hyperons produced in Pb–Pb collisions at 158 A GeV/c. In this paper we present a study of the transverse mass spectra of these particles for a sample of events corresponding to the most central 53% of the inelastic Pb–Pb cross-section. We analyse the transverse mass distributions in the framework of the blast-wave model for the full sample and, for the first time at the SPS, as a function of the event centrality.

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