Strangeness from 20-A-GeV to 158-A-GeV

New results from the energy scan programme of NA49, in particular kaon production at 30 AGeV and phi production at 40 and 80 AGeV are presented. The K+/pi+ ratio shows a pronounced maximum at 30 AGeV; the kaon slope parameters are constant at SPS energies. Both findings support the scenario of a pha...

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Autores principales: Friese, Volker, 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.
Lenguaje:eng
Publicado: 2003
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1088/0954-3899/30/1/011
http://cds.cern.ch/record/617658
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author Friese, Volker
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.
author_facet Friese, Volker
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.
author_sort Friese, Volker
collection CERN
description New results from the energy scan programme of NA49, in particular kaon production at 30 AGeV and phi production at 40 and 80 AGeV are presented. The K+/pi+ ratio shows a pronounced maximum at 30 AGeV; the kaon slope parameters are constant at SPS energies. Both findings support the scenario of a phase transition at about 30 AGeV beam energy. The phi/pi ratio increases smoothly with beam energy, showing an energy dependence similar to K-/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-muB 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.
id cern-617658
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
record_format invenio
spelling cern-6176582023-03-14T20:00:14Zdoi:10.1088/0954-3899/30/1/011http://cds.cern.ch/record/617658engFriese, VolkerAlt, 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, StPálla, 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.Strangeness from 20-A-GeV to 158-A-GeVNuclear Physics - ExperimentNew results from the energy scan programme of NA49, in particular kaon production at 30 AGeV and phi production at 40 and 80 AGeV are presented. The K+/pi+ ratio shows a pronounced maximum at 30 AGeV; the kaon slope parameters are constant at SPS energies. Both findings support the scenario of a phase transition at about 30 AGeV beam energy. The phi/pi ratio increases smoothly with beam energy, showing an energy dependence similar to K-/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-muB 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.New results from the energy scan programme of NA49, in particular kaon production at 30 AGeV and phi production at 40 and 80 AGeV are presented. The K+/pi+ ratio shows a pronounced maximum at 30 AGeV; the kaon slope parameters are constant at SPS energies. Both findings support the scenario of a phase transition at about 30 AGeV beam energy. The phi/pi ratio increases smoothly with beam energy, showing an energy dependence similar to K-/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-muB 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.nucl-ex/0305017oai:cds.cern.ch:6176582003-05-20
spellingShingle Nuclear Physics - Experiment
Friese, Volker
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.
Strangeness from 20-A-GeV to 158-A-GeV
title Strangeness from 20-A-GeV to 158-A-GeV
title_full Strangeness from 20-A-GeV to 158-A-GeV
title_fullStr Strangeness from 20-A-GeV to 158-A-GeV
title_full_unstemmed Strangeness from 20-A-GeV to 158-A-GeV
title_short Strangeness from 20-A-GeV to 158-A-GeV
title_sort strangeness from 20-a-gev to 158-a-gev
topic Nuclear Physics - Experiment
url https://dx.doi.org/10.1088/0954-3899/30/1/011
http://cds.cern.ch/record/617658
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