Strangeness enhancement at mid-rapidity in Pb-Pb collisions at 158 A GeV/c

Authors
Andersen, E Antinori, F Armenise, N Bakke, H Ban, J Barberis, D Beker, H Beusch, W Bloodworth, IJ Bohm, J Caliandro, R Campbell, M Cantatore, E Carrer, N Catanesi, MG Chesi, E Dameri, M Darbo, G Diaczek, A Di Bari, D Di Liberto, S Earl, BC Elia, D Evans, D Fanebust, K Fini, RA Fontaine, JC Ftacnik, J Ghidini, B Grella, G Guida, M Heijne, EHM Helstrup, H Holme, AK Huss, D Jacholkowski, A Jones, GT Jovanovic, P Jusko, A Kachelhoffer, T Kinson, JB Kirk, A Klempt, W Knudsen, BTH Knudson, K Kralik, I Lenti, V Lietava, R Loconsole, RA Lovhoiden, G Luptak, M Mack, V Manzari, V Martinengo, P Mazzoni, MA Meddi, F Michalon, A Michalon-Mentzer, ME Middelkamp, P Morando, M Muciaccia, MT Nappi, E Navach, F Norman, PI Osculati, B Pastircak, B Pellegrini, F Piska, K Posa, F Quercigh, E Ricci, RA Romano, G Rosa, G Rossi, L Rotscheidt, H Safarik, K Saladino, S Salvo, C Sandor, L Segato, G Sene, M Sene, R Simone, S Snoeys, W Staroba, P Szafran, S Thompson, M Thorsteinsen, TF Tomasicchio, G Torrieri, GD Tveter, TS Urban, J Venables, M Baillie, OV Virgili, T Volte, A Votruba, MF Zavada, P
Citation
E. Andersen et al., Strangeness enhancement at mid-rapidity in Pb-Pb collisions at 158 A GeV/c, PHYS LETT B, 449(3-4), 1999, pp. 401-406
Citations number
23
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
449
Issue
3-4
Year of publication
1999
Pages
401 - 406
Database
ISI
SICI code
0370-2693(19990311)449:3-4<401:SEAMIP>2.0.ZU;2-A
Abstract
K-S(0), Lambda, Xi, Omega and negative particle yields and transverse mass spectra have been measured at central rapidity in Pb-Pb and p-Pb collisions at 158 A GeV/c. Yields are studied as a function of the number of nucleons participating in the collision N-part, which is estimated with the Glauber model. From p-Fb to Pb-Pb collisions the particle yields per participant i ncrease substantially, The enhancement is more pronounced for multistrange particles, and exceeds an order of magnitude for the Omega. For a number of participants, N-part, greater than 100, however, all yields per participan t appear to be constant. (C) 1999 Published by Elsevier Science B.V. All ri ghts reserved.