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

作者信息

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

机构信息

Fachbereich Physik der Universität, Frankfurt, Germany.

出版信息

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

DOI:10.1103/PhysRevLett.94.192301

PMID:16090164

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.

摘要