Phys. Rev. Lett.
94,
052301
(2005)
[5 pages]
System-Size Dependence of Strangeness Production in Nucleus-Nucleus Collisions at √sNN=17.3 GeV
C. Alt et al. NA49 Collaboration
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C. Alt9, T. Anticic21, B. Baatar8, D. Barna4, J. Bartke6, L. Betev10,9, H. Białkowska19, A. Billmeier9, C. Blume7,9, B. Boimska19, M. Botje1, J. Bracinik3, R. Bramm9, R. Brun10, P. Bunčić9,10, V. Cerny3, P. Christakoglou2, O. Chvala15, J. G. Cramer17, P. Csató4, N. Darmenov18, A. Dimitrov18, P. Dinkelaker9, V. Eckardt14, G. Farantatos2, D. Flierl9, Z. Fodor4, P. Foka7, P. Freund14, V. Friese7,13, J. Gál4, M. Gaździcki9, G. Georgopoulos2, E. Gładysz6, K. Grebieszkow20, S. Hegyi4, C. Höhne13, K. Kadija21, A. Karev14, M. Kliemant9, S. Kniege9, V. I. Kolesnikov8, T. Kollegger9, E. Kornas6, R. Korus12, M. Kowalski6, I. Kraus7, M. Kreps3, M. van Leeuwen1, P. Lévai4, L. Litov18, B. Lungwitz9, M. Makariev18, A. I. Malakhov8, C. Markert7, M. Mateev18, B. W. Mayes11, G. L. Melkumov8, C. Meurer9, A. Mischke7, M. Mitrovski9, J. Molnár4, St. Mrówczyński12, G. Pálla4, A. D. Panagiotou2, D. Panayotov18, A. Petridis2, M. Pikna3, L. Pinsky11, F. Pühlhofer13, J. G. Reid17, R. Renfordt9, A. Richard9, C. Roland5, G. Roland5, M. Rybczyński12, A. Rybicki6,10, A. Sandoval7, H. Sann7,*, N. Schmitz14, P. Seyboth14, F. Siklér4, B. Sitar3, E. Skrzypczak20, G. Stefanek12, R. Stock9, H. Ströbele9, T. Susa21, I. Szentpétery4, J. Sziklai4, T. A. Trainor17, V. Trubnikov20, D. Varga4, M. Vassiliou2, G. I. Veres4,5, G. Vesztergombi4, D. Vranić7, A. Wetzler9, Z. Włodarczyk12, I. K. Yoo16, J. Zaranek9, and J. Zimányi4 (NA49 Collaboration)
1NIKHEF, Amsterdam, The Netherlands
2Department of Physics, University of Athens, Athens, Greece
3Comenius University, Bratislava, Slovakia
4KFKI Research Institute for Particle and Nuclear Physics, Budapest, Hungary
5MIT, Cambridge, Massachusetts, USA
6Institute of Nuclear Physics, Cracow, Poland
7Gesellschaft für Schwerionenforschung (GSI), Darmstadt, Germany
8Joint Institute for Nuclear Research, Dubna, Russia
9Fachbereich Physik der Universität, Frankfurt, Germany
10CERN, Geneva, Switzerland
11University of Houston, Houston, Texas, USA
12Świetokrzyska Academy, Kielce, Poland
13Fachbereich Physik der Universität, Marburg, Germany
14Max-Planck-Institut für Physik, Munich, Germany
15Institute of Particle and Nuclear Physics, Charles University, Prague, Czech Republic
16Department of Physics, Pusan National University, Pusan, Republic of Korea
17Nuclear Physics Laboratory, University of Washington, Seattle, Washington, USA
18Atomic Physics Department, Sofia University St. Kliment Ohridski, Sofia, Bulgaria
19Institute for Nuclear Studies, Warsaw, Poland
20Institute for Experimental Physics, University of Warsaw, Warsaw, Poland
21Rudjer Boskovic Institute, Zagreb, Croatia
Received 27 June 2004; published 7 February 2005
Emission of π±, K±, ϕ, and Λ was measured in near-central C+C and Si+Si collisions at 158 AGeV beam energy. Together with earlier data for p+p, S+S, and Pb+Pb, the system-size dependence of relative strangeness production in nucleus-nucleus collisions is obtained. Its fast rise and the saturation observed at about 60 participating nucleons can be understood as the onset of the formation of coherent systems of increasing size.
© 2005 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.052301
DOI:
10.1103/PhysRevLett.94.052301
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