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Energy dependence of pion and kaon production in central Pb+Pb collisions

Sergey V. Afanasiev, Tome Antičić, Daniel Barna, Jerzy Bartke, Robert Allan Barton, Matthias Behler, Latchezar Betev, Helena Białkowska, Anja Billmeier, Christoph Blume, Charles O. Blyth, Bożena Boimska, Michiel Botje, Juraj Bracinik, Roland Bramm, René Brun, Predrag Bunčić, Vladimír Cerny, John G. Cramer, Péter Csató, Peter Dinkelaker, Volker Eckardt, Peter Filip, Zoltán Fodor, Panagiota Foka, Peter Freund, Volker Friese, József Gál, Marek Gaździcki, George Georgopoulos, Ewa Gładysz-Dziaduś, Sándor Hegyi, Claudia Höhne, George J. Igo, Peter Graham Jones, Krešo Kadija, Alexandre Karev, Vadim I. Kolesnikov, Thorsten Kollegger, Marek Kowalski, Ingrid Kraus, Michal Kreps, Marco van Leeuwen, Péter Lévai, Aleksandr I. Malakhov, Spyridon Margetis, Christina Markert, Bill W. Mayes, Georgy L. Melkumov, André Mischke, József Molnár, John M. Nelson, Gabriella Pálla, Apostolos D. Panagiotou, Katarzyna Perl, Athanasios Petridis, Miroslav Pikna, Lawrence Pinsky, Falk Pühlhofer, Jeffrey G. Reid, Rainer Arno Ernst Renfordt, Waldemar Retyk, Christof Roland, Gunther Roland, Andrzej Rybicki, Thomas Sammer, Andres Sandoval, Hans Sann, Norbert Schmitz, Peter Seyboth, Ferenc Siklér, Branislav Sitar, Ewa Skrzypczak, Gordon Thomas Anderson Squier, Reinhard Stock, Herbert Ströbele, Tatjana Šuša, Imre Szentpétery, János Sziklai, Thomas A. Trainor, Dezsö Varga, Maria Vassiliou, Gábor I. Veres, György Vesztergombi, Danilo Vranić, Alexander Albert Wetzler, Charles A. Whitten, In-Kwon Yoo, Jacek Zaranek, József Zimányi

  • 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.

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Author:Sergey V. AfanasievORCiDGND, Tome AntičićORCiD, Daniel BarnaORCiD, Jerzy BartkeGND, Robert Allan Barton, Matthias BehlerGND, Latchezar BetevORCiDGND, Helena BiałkowskaORCiD, Anja BillmeierGND, Christoph BlumeORCiDGND, Charles O. Blyth, Bożena BoimskaORCiD, Michiel BotjeORCiD, Juraj BracinikORCiD, Roland BrammGND, René BrunGND, Predrag Bunčić, Vladimír Cerny, John G. CramerGND, Péter Csató, Peter DinkelakerGND, Volker Eckardt, Peter FilipORCiD, Zoltán FodorGND, Panagiota FokaORCiD, Peter Freund, Volker FrieseORCiDGND, József Gál, Marek GaździckiORCiD, George Georgopoulos, Ewa Gładysz-DziaduśORCiD, Sándor Hegyi, Claudia HöhneGND, George J. Igo, Peter Graham Jones, Krešo Kadija, Alexandre Karev, Vadim I. KolesnikovORCiD, Thorsten KolleggerORCiDGND, Marek Kowalski, Ingrid KrausGND, Michal KrepsORCiD, Marco van LeeuwenORCiDGND, Péter LévaiGND, Aleksandr I. MalakhovGND, Spyridon Margetis, Christina MarkertORCiDGND, Bill W. Mayes, Georgy L. Melkumov, André MischkeORCiD, József Molnár, John M. Nelson, Gabriella Pálla, Apostolos D. Panagiotou, Katarzyna Perl, Athanasios PetridisORCiD, Miroslav Pikna, Lawrence PinskyORCiD, Falk PühlhoferGND, Jeffrey G. Reid, Rainer Arno Ernst Renfordt, Waldemar Retyk, Christof RolandORCiDGND, Gunther RolandGND, Andrzej RybickiORCiD, Thomas SammerGND, Andres SandovalORCiD, Hans Sann, Norbert SchmitzGND, Peter SeybothORCiDGND, Ferenc SiklérORCiD, Branislav Sitar, Ewa Skrzypczak, Gordon Thomas Anderson Squier, Reinhard StockGND, Herbert Ströbele, Tatjana ŠušaORCiD, Imre Szentpétery, János SziklaiORCiD, Thomas A. TrainorORCiD, Dezsö VargaORCiDGND, Maria VassiliouORCiD, Gábor I. VeresORCiD, György Vesztergombi, Danilo VranićGND, Alexander Albert WetzlerGND, Charles A. Whitten, In-Kwon YooORCiDGND, Jacek ZaranekGND, József Zimányi
URN:urn:nbn:de:hebis:30-16547
DOI:https://doi.org/10.48550/arXiv.nucl-ex/0205002
ArXiv Id:http://arxiv.org/abs/nucl-ex/0205002
Document Type:Preprint
Language:English
Date of Publication (online):2002/10/22
Date of first Publication:2002/10/22
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Creating Corporation:NA49 Collaboration
Release Date:2005/09/27
Page Number:43
Note:
Preprint, später in Physical review C 66.2002, 054902
Source:Phys.Rev. C66 (2002), http://arxiv.org/abs/nucl-ex/0205002
HeBIS-PPN:185746977
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht