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Energy and centrality dependence of deuteron and proton production in Pb+Pb collisions at relativistic energies

Tome Antičić, B. Baatar, Daniel Barna, Jerzy Bartke, Matthias Behler, Latchezar Betev, Helena Białkowska, Anja Billimeier, Christoph Blume, Bożena Boimska, Michiel Botje, Juraj Bracinik, Roland Bramm, René Brun, Predrag Bunčić, Vladimír Černý, Panagiotis Christakoglou, Ondrej Chvala, Glenn E. Cooper, John G. Cramer, Péter Csató, Peter Dinkelaker, Volker Eckardt, Peter Filip, Hans Gerhard Fischer, Zoltán Fodor, Panagiota Foka, Peter Freund, Volker Friese, József Gál, Marek Gaździcki, George Georgopoulos, Ewa Gładysz-Dziaduś, Sándor Hegyi, Claudia Höhne, Peter Martin Jacobs, Krešo Kadija, Alexandre Karev, Vadim I. Kolesnikov, Thorsten Kollegger, Robert Korus, Marek Kowalski, Ingrid Kraus, Michal Kreps, Marco van Leeuwen, Péter Lévai, Aleksandr I. Malakhov, Christina Markert, Bill W. Mayes, Georgy L. Melkumov, Christine Meurer, André Mischke, Michael Kosta Mitrovski, József Molnár, Stanislaw Mrówczyński, 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, Maciej Rybczyński, Andrzej Rybicki, Andres Sandoval, Hans Sann, Norbert Schmitz, Peter Seyboth, Ferenc Siklér, Branislav Sitar, Ewa Skrzypczak, Grzegorz Stefanek, Reinhard Stock, Herbert Ströbele, Tatjana Šuša, Imre Szentpétery, János Sziklai, Thomas A. Trainor, Dezsö Varga, Maria Vassiliou, Gábor I. Veres, György Vesztergombi, Danilo Vranić, Siegfried Wenig, Alexander Albert Wetzler, Zbigniew Włodarczyk, Nu Xu, In-Kwon Yoo, Jacek Zaranek, József Zimanyi

  • The transverse mass mt distributions for deuterons and protons are measured in Pb+Pb reactions near midrapidity and in the range 0<mt–m<1.0 (1.5) GeV/c2 for minimum bias collisions at 158A GeV and for central collisions at 40 and 80 A GeV beam energies. The rapidity density dn/dy, inverse slope parameter T and mean transverse mass <mt> derived from mt distributions as well as the coalescence parameter B2 are studied as a function of the incident energy and the collision centrality. The deuteron mt spectra are significantly harder than those of protons, especially in central collisions. The coalescence factor B2 shows three systematic trends. First, it decreases strongly with increasing centrality reflecting an enlargement of the deuteron coalescence volume in central Pb+Pb collisions. Second, it increases with mt. Finally, B2 shows an increase with decreasing incident beam energy even within the SPS energy range. The results are discussed and compared to the predictions of models that include the collective expansion of the source created in Pb+Pb collisions.

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Author:Tome AntičićORCiD, B. Baatar, Daniel BarnaORCiD, Jerzy BartkeGND, Matthias BehlerGND, Latchezar BetevORCiDGND, Helena BiałkowskaORCiD, Anja Billimeier, Christoph BlumeORCiDGND, Bożena BoimskaORCiD, Michiel BotjeORCiD, Juraj BracinikORCiD, Roland BrammGND, René BrunGND, Predrag Bunčić, Vladimír Černý, Panagiotis ChristakoglouORCiD, Ondrej ChvalaORCiD, Glenn E. Cooper, John G. CramerGND, Péter Csató, Peter DinkelakerGND, Volker Eckardt, Peter FilipORCiD, Hans Gerhard Fischer, Zoltán FodorGND, Panagiota FokaORCiD, Peter Freund, Volker FrieseORCiDGND, József Gál, Marek GaździckiORCiD, George Georgopoulos, Ewa Gładysz-DziaduśORCiD, Sándor Hegyi, Claudia HöhneGND, Peter Martin JacobsORCiD, Krešo Kadija, Alexandre Karev, Vadim I. KolesnikovORCiD, Thorsten KolleggerORCiDGND, Robert Korus, Marek Kowalski, Ingrid KrausGND, Michal KrepsORCiD, Marco van LeeuwenORCiDGND, Péter LévaiGND, Aleksandr I. MalakhovGND, Christina MarkertORCiDGND, Bill W. Mayes, Georgy L. Melkumov, Christine MeurerGND, André MischkeORCiD, Michael Kosta MitrovskiGND, József Molnár, Stanislaw MrówczyńskiORCiD, 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, Maciej RybczyńskiORCiD, Andrzej RybickiORCiD, Andres SandovalORCiD, Hans Sann, Norbert SchmitzGND, Peter SeybothORCiDGND, Ferenc SiklérORCiD, Branislav Sitar, Ewa Skrzypczak, Grzegorz StefanekORCiD, Reinhard StockGND, Herbert Ströbele, Tatjana ŠušaORCiD, Imre Szentpétery, János SziklaiORCiD, Thomas A. TrainorORCiD, Dezsö VargaORCiDGND, Maria VassiliouORCiD, Gábor I. VeresORCiD, György Vesztergombi, Danilo VranićGND, Siegfried WenigORCiD, Alexander Albert WetzlerGND, Zbigniew WłodarczykORCiD, Nu Xu, In-Kwon YooORCiDGND, Jacek ZaranekGND, József Zimanyi
URN:urn:nbn:de:hebis:30-16264
DOI:https://doi.org/10.1103/PhysRevC.69.024902
Publisher:The American Physical Society
Document Type:Article
Language:English
Year of Completion:2004
Date of first Publication:2004/02/10
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Creating Corporation:NA49 Collaboration
Release Date:2005/09/26
Volume:69.2004
Issue:024902
Page Number:9
Source:Published in Phys.Rev.C69:024902,2004, ©2004 The American Physical Society, http://link.aps.org/abstract/PRC/v69/p024902
HeBIS-PPN:191510963
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License LogoDeutsches Urheberrecht