Energy Dependence of Pion and Kaon Production in Central Pb+Pb Collisions

Results on the energy dependence of charged pion and kaon production in central Pb+Pb collisions at 40, 80 and 158 A GeV are presented and compared with data at lower and higher energies. The mean pion multiplicity increases approximately linearly with s^{1/4} with a change of slope around 40 A GeV....

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Detalles Bibliográficos
Autores principales: Afanasiev, S.V., Anticic, T., Barna, D., Bartke, J., Barton, R.A., Behler, M., Betev, L., Bialkowska, H., Billmeier, A., Blume, C., Blyth, C.O., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Brun, R., Buncic, P., Cerny, V., 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., Igo, G., Jones, P.G., Kadija, K., Karev, A., Kolesnikov, V.I., Kollegger, T., Kowalski, M., Kraus, I., Kreps, M., van Leeuwen, M., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Mayes, B.W., Melkumov, G.L., Mischke, A., Molnar, J., Nelson, John M., Palla, G., Panagiotou, A.D., Perl, K., Petridis, A., Pikna, M., Pinsky, Lawrence S., Puhlhofer, F., Reid, J.G., Renfordt, R., Retyk, W., Roland, C., Roland, G., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Schmitz, N., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Squier, G.T.A., Stock, R., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Trainor, T.A., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wenig, S., Wetzler, A., Whitten, C., Yoo, I.K., Zaranek, J., Zimanyi, J.
Lenguaje:eng
Publicado: 2002
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1103/PhysRevC.66.054902
http://cds.cern.ch/record/550300
_version_ 1780898479223078912
author Afanasiev, S.V.
Anticic, T.
Barna, D.
Bartke, J.
Barton, R.A.
Behler, M.
Betev, L.
Bialkowska, H.
Billmeier, A.
Blume, C.
Blyth, C.O.
Boimska, B.
Botje, M.
Bracinik, J.
Bramm, R.
Brun, R.
Buncic, P.
Cerny, V.
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.
Igo, G.
Jones, P.G.
Kadija, K.
Karev, A.
Kolesnikov, V.I.
Kollegger, T.
Kowalski, M.
Kraus, I.
Kreps, M.
van Leeuwen, M.
Levai, P.
Malakhov, A.I.
Margetis, S.
Markert, C.
Mayes, B.W.
Melkumov, G.L.
Mischke, A.
Molnar, J.
Nelson, John M.
Palla, G.
Panagiotou, A.D.
Perl, K.
Petridis, A.
Pikna, M.
Pinsky, Lawrence S.
Puhlhofer, F.
Reid, J.G.
Renfordt, R.
Retyk, W.
Roland, C.
Roland, G.
Rybicki, A.
Sammer, T.
Sandoval, A.
Sann, H.
Schmitz, N.
Seyboth, P.
Sikler, F.
Sitar, B.
Skrzypczak, E.
Squier, G.T.A.
Stock, R.
Strobele, H.
Susa, T.
Szentpetery, I.
Sziklai, J.
Trainor, T.A.
Varga, D.
Vassiliou, M.
Veres, G.I.
Vesztergombi, G.
Vranic, D.
Wenig, S.
Wetzler, A.
Whitten, C.
Yoo, I.K.
Zaranek, J.
Zimanyi, J.
author_facet Afanasiev, S.V.
Anticic, T.
Barna, D.
Bartke, J.
Barton, R.A.
Behler, M.
Betev, L.
Bialkowska, H.
Billmeier, A.
Blume, C.
Blyth, C.O.
Boimska, B.
Botje, M.
Bracinik, J.
Bramm, R.
Brun, R.
Buncic, P.
Cerny, V.
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.
Igo, G.
Jones, P.G.
Kadija, K.
Karev, A.
Kolesnikov, V.I.
Kollegger, T.
Kowalski, M.
Kraus, I.
Kreps, M.
van Leeuwen, M.
Levai, P.
Malakhov, A.I.
Margetis, S.
Markert, C.
Mayes, B.W.
Melkumov, G.L.
Mischke, A.
Molnar, J.
Nelson, John M.
Palla, G.
Panagiotou, A.D.
Perl, K.
Petridis, A.
Pikna, M.
Pinsky, Lawrence S.
Puhlhofer, F.
Reid, J.G.
Renfordt, R.
Retyk, W.
Roland, C.
Roland, G.
Rybicki, A.
Sammer, T.
Sandoval, A.
Sann, H.
Schmitz, N.
Seyboth, P.
Sikler, F.
Sitar, B.
Skrzypczak, E.
Squier, G.T.A.
Stock, R.
Strobele, H.
Susa, T.
Szentpetery, I.
Sziklai, J.
Trainor, T.A.
Varga, D.
Vassiliou, M.
Veres, G.I.
Vesztergombi, G.
Vranic, D.
Wenig, S.
Wetzler, A.
Whitten, C.
Yoo, I.K.
Zaranek, J.
Zimanyi, J.
author_sort Afanasiev, S.V.
collection CERN
description Results on the energy dependence of charged pion and kaon production in central Pb+Pb collisions at 40, 80 and 158 A GeV are presented and compared with data at lower and higher energies. The mean pion multiplicity increases approximately linearly with s^{1/4} with a change of slope around 40 A GeV. The change from pion suppression with respect to p+p interactions, as observed at low collision energies, to pion enhancement at high energies also occurs at about 40 A GeV. A non-monotonic energy dependence of the ratio of K+ to pi+ yields is observed, with a maximum close to 40 A GeV, followed by a nearly constant value at higher energies. The measured dependences are consistent with the hypothesis, derived within a Statistical Model of the Early Stage of nucleus-nucleus reactions, that a transient state of deconfined matter is created in Pb+Pb collisions for energies larger than about 40 A GeV.
id cern-550300
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
record_format invenio
spelling cern-5503002019-09-30T06:29:59Zdoi:10.1103/PhysRevC.66.054902http://cds.cern.ch/record/550300engAfanasiev, S.V.Anticic, T.Barna, D.Bartke, J.Barton, R.A.Behler, M.Betev, L.Bialkowska, H.Billmeier, A.Blume, C.Blyth, C.O.Boimska, B.Botje, M.Bracinik, J.Bramm, R.Brun, R.Buncic, P.Cerny, V.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.Igo, G.Jones, P.G.Kadija, K.Karev, A.Kolesnikov, V.I.Kollegger, T.Kowalski, M.Kraus, I.Kreps, M.van Leeuwen, M.Levai, P.Malakhov, A.I.Margetis, S.Markert, C.Mayes, B.W.Melkumov, G.L.Mischke, A.Molnar, J.Nelson, John M.Palla, G.Panagiotou, A.D.Perl, K.Petridis, A.Pikna, M.Pinsky, Lawrence S.Puhlhofer, F.Reid, J.G.Renfordt, R.Retyk, W.Roland, C.Roland, G.Rybicki, A.Sammer, T.Sandoval, A.Sann, H.Schmitz, N.Seyboth, P.Sikler, F.Sitar, B.Skrzypczak, E.Squier, G.T.A.Stock, R.Strobele, H.Susa, T.Szentpetery, I.Sziklai, J.Trainor, T.A.Varga, D.Vassiliou, M.Veres, G.I.Vesztergombi, G.Vranic, D.Wenig, S.Wetzler, A.Whitten, C.Yoo, I.K.Zaranek, J.Zimanyi, J.Energy Dependence of Pion and Kaon Production in Central Pb+Pb CollisionsNuclear Physics - ExperimentResults on the energy dependence of charged pion and kaon production in central Pb+Pb collisions at 40, 80 and 158 A GeV are presented and compared with data at lower and higher energies. The mean pion multiplicity increases approximately linearly with s^{1/4} with a change of slope around 40 A GeV. The change from pion suppression with respect to p+p interactions, as observed at low collision energies, to pion enhancement at high energies also occurs at about 40 A GeV. A non-monotonic energy dependence of the ratio of K+ to pi+ yields is observed, with a maximum close to 40 A GeV, followed by a nearly constant value at higher energies. The measured dependences are consistent with the hypothesis, derived within a Statistical Model of the Early Stage of nucleus-nucleus reactions, that a transient state of deconfined matter is created in Pb+Pb collisions for energies larger than about 40 A GeV.Measurements of charged pion and kaon production in central Pb+Pb collisions at 40, 80 and 158 AGeV are presented. These are compared with data at lower and higher energies as well as with results from p+p interactions. The mean pion multiplicity per wounded nucleon increases approximately linearly with s_NN^1/4 with a change of slope starting in the region 15-40 AGeV. The change from pion suppression with respect to p+p interactions, as observed at low collision energies, to pion enhancement at high energies occurs at about 40 AGeV. A non-monotonic energy dependence of the ratio of K^+ to pi^+ yields is observed, with a maximum close to 40 AGeV and an indication of a nearly constant value at higher energies.The measured dependences may be related to an increase of the entropy production and a decrease of the strangeness to entropy ratio in central Pb+Pb collisions in the low SPS energy range, which is consistent with the hypothesis that a transient state of deconfined matter is created above these energies. Other interpretations of the data are also discussed.nucl-ex/0205002oai:cds.cern.ch:5503002002-05-06
spellingShingle Nuclear Physics - Experiment
Afanasiev, S.V.
Anticic, T.
Barna, D.
Bartke, J.
Barton, R.A.
Behler, M.
Betev, L.
Bialkowska, H.
Billmeier, A.
Blume, C.
Blyth, C.O.
Boimska, B.
Botje, M.
Bracinik, J.
Bramm, R.
Brun, R.
Buncic, P.
Cerny, V.
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.
Igo, G.
Jones, P.G.
Kadija, K.
Karev, A.
Kolesnikov, V.I.
Kollegger, T.
Kowalski, M.
Kraus, I.
Kreps, M.
van Leeuwen, M.
Levai, P.
Malakhov, A.I.
Margetis, S.
Markert, C.
Mayes, B.W.
Melkumov, G.L.
Mischke, A.
Molnar, J.
Nelson, John M.
Palla, G.
Panagiotou, A.D.
Perl, K.
Petridis, A.
Pikna, M.
Pinsky, Lawrence S.
Puhlhofer, F.
Reid, J.G.
Renfordt, R.
Retyk, W.
Roland, C.
Roland, G.
Rybicki, A.
Sammer, T.
Sandoval, A.
Sann, H.
Schmitz, N.
Seyboth, P.
Sikler, F.
Sitar, B.
Skrzypczak, E.
Squier, G.T.A.
Stock, R.
Strobele, H.
Susa, T.
Szentpetery, I.
Sziklai, J.
Trainor, T.A.
Varga, D.
Vassiliou, M.
Veres, G.I.
Vesztergombi, G.
Vranic, D.
Wenig, S.
Wetzler, A.
Whitten, C.
Yoo, I.K.
Zaranek, J.
Zimanyi, J.
Energy Dependence of Pion and Kaon Production in Central Pb+Pb Collisions
title Energy Dependence of Pion and Kaon Production in Central Pb+Pb Collisions
title_full Energy Dependence of Pion and Kaon Production in Central Pb+Pb Collisions
title_fullStr Energy Dependence of Pion and Kaon Production in Central Pb+Pb Collisions
title_full_unstemmed Energy Dependence of Pion and Kaon Production in Central Pb+Pb Collisions
title_short Energy Dependence of Pion and Kaon Production in Central Pb+Pb Collisions
title_sort energy dependence of pion and kaon production in central pb+pb collisions
topic Nuclear Physics - Experiment
url https://dx.doi.org/10.1103/PhysRevC.66.054902
http://cds.cern.ch/record/550300
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