Strangeness from 20AGeV to 158AGeV (CROSBI ID 104842)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Alt, C. ; Antičić, Tome ; Baatar, B. ; Barna, D, Bartke, J. ; Behler, M. ; Betev, L. ; Bialkowska, H. ; Billmeier, A. ; Blume, C. ; Boimska, B. ; Botje, M. ; Bracinik, J. ; Bramm, R. ; Brun, R. ; Bunčcić, P. ; Cerny, V. ; Christakoglou, P. ; Chvala, O. ; Cramer, J.G. ; Csato, P. ; Dinkelaker, P. ; Eckardt, V. ; Filip, P. ; Fischer, H.G. ; Fodor, Z. ; Foka, P. ; Freund, P. ; Friese, V. ; Gal, J. ; Gazdzicki, M. ; Georgopoulos, G. ; Gladysz, E. ; Hegyi, S. ; Hohne, C. ; Kadija, Krešo ; Karev, A. ; Kniege, S. ; Kolesnikov, V.I. ; Kollegger, T. ; Korus, R. ; Kowalski, M. ; Kraus, I. ; Kreps, M. ; van Leeuwen, M. ; Levai, P. ; Malakhov, A.I. ; Markert, C. ; Mayes, B.W. ; Melkumov, G.L. ; Meurer, C. ; Mischke, A. ; Mitrovski, M. ; Molnar, J. ; Mrowczynski, St. ; Palla, G. ; Panagiotou, A.D. ; Perl, K. ; Petridis, A. ; Pikna, M. ; Pinsky, L. ; Puhlhofer, F. ; Reid, J.G. ; Renfordt, R. ; Retyk, W. ; Roland, C. ; Roland, G. ; Rybczynski, M. ; Rybicki, A. ; Sandoval, A. ; Sann, H. ; Schmitz, N. ; Seyboth, P. ; Sikler, F. ; Sitar, B. ; Skrzypczak, E. ; Stefanek, G. ; Stock, R. ; Strobele, H. ; Šuša, Tatjana ; Szentpetery, I. ; Sziklai, J. ; Trainor, T.A. ; Varga, D. ; Vassiliou, M. ; Veres, G.I. ; Vesztergombi, G. ; Vranić, Danilo ; Wenig, S. ; Wetzler, A. ; Wodarczyk, Z. ; Yoo, I.K. ; Zaranek, J. ; Zimanyi, J.
engleski
Strangeness from 20AGeV to 158AGeV
New results from the energy scan programme of NA49, in particular kaon production at 30AGeV and fi production at 40 and 80AGeV are presented. The K+/pi+ ratio shows a pronounced maximum at 30AGeV ; the kaon slope parameters are constant at SPS energies. Both findings support the scenario of a phase transition at about 30AGeV beam energy. The fi/pi ratio increases smoothly with beam energy, showing an energy dependence similar toK-/pi-. The measured particle yields can be reproduced by a hadron gas model, with chemical freeze-out parameters on a smooth curve in the T– µ ; ; ; ; _B plane. The transverse spectra can be understood as resulting from a rapidly expanding, locally equilibrated source. No evidence for an earlier kinetic decoupling of heavy hyperons is found.
SPS energy; strange particle production
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