TY  - INPR
A1  - Mitrovski, Michael K.
A1  - Alt, Christopher
A1  - Antičić, Tome
A1  - Baatar, B.
A1  - Barna, Daniel
A1  - Bartke, Jerzy
A1  - Behler, Matthias
A1  - Betev, Latchezar
A1  - Białkowska, Helena
A1  - Billmeier, Anja
A1  - Blume, Christoph
A1  - Boimska, Bożena
A1  - Botje, Michiel
A1  - Bracinik, Juraj
A1  - Bramm, Roland
A1  - Brun, René
A1  - Bunčić, Predrag
A1  - Cerny, Vladimír
A1  - Christakoglou, Panagiotis
A1  - Chvala, Ondrej
A1  - Cramer, John G.
A1  - Csató, Péter
A1  - Darmenov, Nikolay
A1  - Dimitrov, Anton
A1  - Dinkelaker, Peter
A1  - Eckardt, Volker
A1  - Filip, Peter
A1  - Fischer, Hans Gerhard
A1  - Flierl, Dominik Bernhard
A1  - Fodor, Zoltán
A1  - Foka, Panagiota
A1  - Freund, Peter
A1  - Friese, Volker
A1  - Gál, József
A1  - Gaździcki, Marek
A1  - Georgopoulos, George
A1  - Gładysz-Dziaduś, Ewa
A1  - Hegyi, Sándor
A1  - Höhne, Claudia
A1  - Kadija, Krešo
A1  - Karev, Alexandre
A1  - Kliemant, Michael
A1  - Kniege, Stefan
A1  - Kolesnikov, Vadim I.
A1  - Kollegger, Thorsten
A1  - Kornaś, Ewelina
A1  - Korus, Robert
A1  - Kowalski, Marek
A1  - Kraus, Ingrid
A1  - Kreps, Michal
A1  - Leeuwen, Marco van
A1  - Lévai, Péter
A1  - Litov, Leandr
A1  - Lungwitz, Benjamin
A1  - Makariev, Martin Vasilev
A1  - Malakhov, Aleksandr I.
A1  - Markert, Christina
A1  - Mateev, Matej D.
A1  - Mayes, Bill W.
A1  - Melkumov, Georgy L.
A1  - Meurer, Christine
A1  - Mischke, André
A1  - Mitrovski, Michael Kosta
A1  - Molnár, József
A1  - Mrówczyński, Stanislaw
A1  - Pálla, Gabriella
A1  - Panagiotou, Apostolos D.
A1  - Panayotov, Dobromir
A1  - Perl, Katarzyna
A1  - Petridis, Athanasios
A1  - Pikna, Miroslav
A1  - Pinsky, Lawrence
A1  - Pühlhofer, Falk
A1  - Reid, Jeffrey G.
A1  - Renfordt, Rainer Arno Ernst
A1  - Retyk, Waldemar
A1  - Richard, Agnes Carol Joanna
A1  - Roland, Christof
A1  - Roland, Gunther
A1  - Rybczyński, Maciej
A1  - Rybicki, Andrzej
A1  - Sandoval, Andres
A1  - Sann, Hans
A1  - Schmitz, Norbert
A1  - Seyboth, Peter
A1  - Siklér, Ferenc
A1  - Sitar, Branislav
A1  - Skrzypczak, Ewa
A1  - Stefanek, Grzegorz
A1  - Stock, Reinhard
A1  - Ströbele, Herbert
A1  - Šuša, Tatjana
A1  - Szentpétery, Imre
A1  - Sziklai, János
A1  - Trainor, Thomas A.
A1  - Varga, Dezsö
A1  - Vassiliou, Maria
A1  - Veres, Gábor I.
A1  - Vesztergombi, György
A1  - Vranić, Danilo
A1  - Wenig, Siegfried
A1  - Wetzler, Alexander Albert
A1  - Włodarczyk, Zbigniew
A1  - Yoo, In-Kwon
A1  - Zaranek, Jacek
A1  - Zimányi, József
T1  - Multistrange hyperon production in Pb + Pb collisions at 30, 40, 80 and 158 A GeV
N2  - A non-monotonic energy dependence of the K + / pi + ratio with a sharp maximum close to 30 A GeV is observed in central Pb+Pb collisions. Within a statistical model of the early stage, this is interpreted as a sign of the phase transition to a QGP, which causes a sharp change in the energy dependence of the strangeness to entropy ratio. This observation naturally motivates us to study the production of multistrange hyperons (Xi, Omega) as a function of the beam energy. Furthermore it was suggested that the kinematic freeze-out of Omega takes place directly at QGP hadronization. If this is indeed the case, the transverse momentum spectra of the Omega directly reflect the transverse expansion velocity of a hadronizing QGP. In this report we show preliminary NA49 results on Omega - and Omega + production in central Pb+Pb collisions at 40 and 158 A GeV and compare them to measurements of Xi - and Xi + production in central Pb+Pb collisions at 30, 40, 80 and 158 A GeV.
Y1  - 2003
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3870
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-16271
N1  - Preprint, später in Progress in Particle and Nuclear Physics 53.2004, 1, S. 269-272
ER  -