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. 2005 May 20;94(19):192301.
doi: 10.1103/PhysRevLett.94.192301. Epub 2005 May 18.

Omega- and Omega+ production in central Pb + Pb collisions at 40 and 158A GeV

C Alt  1 , T Anticic, B Baatar, D Barna, J Bartke, L Betev, H Białkowska, A Billmeier, C Blume, B Boimska, M Botje, J Bracinik, R Bramm, R Brun, P Buncić, V Cerny, P Christakoglou, O Chvala, J G Cramer, P Csató, N Darmenov, A Dimitrov, P Dinkelaker, V Eckardt, G Farantatos, D Flierl, Z Fodor, P Foka, P Freund, V Friese, J Gál, M Gaździcki, G Georgopoulos, E Gładysz, K Grebieszkow, S Hegyi, C Höhne, K Kadija, A Karev, M Kliemant, S Kniege, V I Kolesnikov, T Kollegger, E Kornas, R Korus, M Kowalski, I Kraus, M Kreps, M van Leeuwen, P Lévai, L Litov, B Lungwitz, M Makariev, A I Malakhov, C Markert, M Mateev, B W Mayes, G L Melkumov, C Meurer, A Mischke, M Mitrovski, J Molnár, St Mrówczyński, G Pálla, A D Panagiotou, D Panayotov, A Petridis, M Pikna, L Pinsky, F Pühlhofer, J G Reid, R Renfordt, A Richard, C Roland, G Roland, M Rybczyński, A Rybicki, A Sandoval, H Sann, N Schmitz, P Seyboth, F Siklér, B Sitar, E Skrzypczak, G Stefanek, R Stock, H Ströbele, T Susa, I Szentpétery, J Sziklai, T A Trainor, D Varga, M Vassiliou, G I Veres, G Vesztergombi, D Vranić, A Wetzler, Z Włodarczyk, I K Yoo, J Zaranek, J Zimányi; NA49 Colloboration
Affiliations

Omega- and Omega+ production in central Pb + Pb collisions at 40 and 158A GeV

C Alt et al. Phys Rev Lett. .

Abstract

Results are presented on Omega production in central Pb+Pb collisions at 40 and 158A GeV beam energy. For the first time in heavy ion reactions, rapidity distributions and total yields were measured for the sum Omega(-) + Omega(+) at 40A GeV and for Omega(-) and Omega(+) separately at 158A GeV. The yields are strongly underpredicted by the string-hadronic UrQMD model but agree better with predictions from hadron gas models.

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