Strangeness from 20 A GeV to 158 A GeV

Επιστημονική δημοσίευση - Άρθρο Περιοδικού uoadl:3074732 31 Αναγνώσεις

Μονάδα:
Ερευνητικό υλικό ΕΚΠΑ
Τίτλος:
Strangeness from 20 A GeV to 158 A GeV
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
New results from the energy scan programme of NA49, in particular kaon production at 30 A GeV and φ production at 40 and 80 A GeV are presented. The K+/π+ ratio shows a pronounced maximum at 30 A GeV; the kaon slope parameters are constant at SPS energies. Both findings support the scenario of a phase transition at about 30 A GeV beam energy. The φ/π ratio increases smoothly with beam energy, showing an energy dependence similar to K-/π- . The measured particle yields can be reproduced by a hadron gas model, with chemical freeze-out parameters on a smooth curve in the T-μB 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.
Έτος δημοσίευσης:
2004
Συγγραφείς:
Friese, V.
Alt, C.
Anticic, T.
Baatar, B.
Barna, D.
Bartke, J.
Behler, M.
Betev, L.
Białkowska, H.
Billmeier, A.
Blume, C.
Boimska, B.
Botje, M.
Bracinik, J.
Bramm, R.
Brun, R.
Bunčić, P.
Cerny, V.
Christakoglou, P.
Chvala, O.
Cramer, J.G.
Csató, P.
Dinkelaker, P.
Eckardt, V.
Filip, P.
Fischer, H.G.
Fodor, Z.
Foka, P.
Freund, P.
Friese, V.
Gál, J.
Gaździcki, M.
Georgopoulos, G.
Gładysz, E.
Hegyi, S.
Höhne, C.
Kadija, K.
Karev, A.
Kniege, S.
Kolesnikov, V.I.
Kollegger, T.
Korus, R.
Kowalski, M.
Kraus, I.
Kreps, M.
Van Leeuwen, M.
Lévai, P.
Malakhov, A.I.
Markert, C.
Mayes, B.W.
Melkumov, G.L.
Meurer, C.
Mischke, A.
Mitrovski, M.
Molnár, J.
Mrówczyński, St.
Pálla, G.
Panagiotou, A.D.
Perl, K.
Petridis, A.
Pikna, M.
Pinsky, L.
Pühlhofer, F.
Reid, J.G.
Renfordt, R.
Retyk, W.
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.
Wenig, S.
Wetzler, A.
Włodarczyk, Z.
Yoo, I.K.
Zaranek, J.
Zimányi, J.
Περιοδικό:
Journal of Physics G: Nuclear and Particle Physics
Τόμος:
30
Αριθμός / τεύχος:
1
Σελίδες:
S119-S128
Επίσημο URL (Εκδότης):
DOI:
10.1088/0954-3899/30/1/011
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