Xi and Xi-bar production in 158 GeV/nucleon Pb + Pb collisions

Harald Appelshäuser, Joachim Bächler, Stephen John Bailey, Daniel Barna, Lee Stuart Barnby, Jerzy Bartke, Robert Allan Barton, Helena Białkowska, Anja Billmeier, Charles O. Blyth, Rudolf Bock, Christian Bormann, Franklin Paul Brady, Robert Brockmann, René Brun, Predrag Bunčić, Helen Louise Caines, Lincoln D. Carr, Daniel A. Cebra, Glenn E. Cooper, John G. Cramer, Markus Cristinziani, Péter Csató, Jason Dunn, Volker Eckardt, Frank Eckhardt, M. I. Ferguson, Hans Gerhard Fischer, Dominik Bernhard Flierl, Zoltán Fodor, Panagiota Foka, Peter Freund, Volker Friese, Matthias Fuchs, Frank Gabler, Rudolf Ganz, W. Geist, József Gál, Marek Gaździcki, Ewa Gładysz-Dziaduś, Jaroslaw Grebieszkow, Jörg Günther, John William Harris, Sándor Hegyi, Torsten Henkel, L. A. Hill, Holm Gero Hümmler, George J. Igo, Detlef Irmscher, Peter Martin Jacobs, Peter Graham Jones, Krešo Kadija, Vadim I. Kolesnikov, Anton Konashenok, Marek Kowalski, Brian Lasiuk, Péter Lévai, F. Liu, Aleksandr I. Malakhov, Spyridon Margetis, Christina Markert, Georgy L. Melkumov, Andreas Mock, József Molnár, J. M. Nelson, Markus D. Oldenburg, Grazyna Janina Odyniec, Gabriella Pálla, Apostolos D. Panagiotou, Athanasios Petridis, Andreas Piper, R. Jefferson Porter, Arthur M. Poskanzer, Duncan J. Prindle, Falk Pühlhofer, Wolfgang Hans Rauch, Jeffrey G. Reid, Rainer Arno Ernst Renfordt, Waldemar Retyk, Hans Georg Ritter, Dieter Röhrich, Christof Roland, Gunther Roland, Heinrich Rudolph, Andrzej Rybicki, Andres Sandoval, Hans Sann, Alexei Yu. Semenov, Erich Schäfer, Dirk Schmischke, Norbert Schmitz, Stefan Schönfelder, Peter Seyboth, Jürgen Seyerlein, Ferenc Siklér, Ewa Skrzypczak, Raimond Snellings, Gordon Thomas Anderson Squier, Reinhard Stock, Herbert Ströbele, Christof Struck, Tatjana Šuša, Imre Szentpétery, János Sziklai, Milton Y. Toy, Thomas A. Trainor, Stephen Trentalange, Thomas Ullrich, Maria Vassiliou, Gábor I. Veres, György Vesztergombi, Danilo Vranić, Feipeng Wang, Dhammika D. Weerasundara, Siegfried Wenig, Charles A. Whitten, Thomas Wienold, Lindsay Wood, Nu Xu, Tim A. Yates, József Zimányi, Xue-Zhou Zhu, Ryszard Zybert

  • We report measurements of Xi and Xi-bar hyperon absolute yields as a function of rapidity in 158 GeV/c Pb+Pb collisions. At midrapidity, dN/dy = 2.29 +/- 0.12 for Xi, and 0.52 +/- 0.05 for Xi-bar, leading to the ratio of Xi-bar/Xi = 0.23 +/- 0.03. Inverse slope parameters fitted to the measured transverse mass spectra are of the order of 300 MeV near mid-rapidity. The estimated total yield of Xi particles in Pb+Pb central interactions amounts to 7.4 +/- 1.0 per collision. Comparison to Xi production in properly scaled p+p reactions at the same energy reveals a dramatic enhancement (about one order of magnitude) of Xi production in Pb+Pb central collisions over elementary hadron interactions.

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Author:Harald AppelshäuserORCiDGND, Joachim Bächler, Stephen John Bailey, Daniel BarnaORCiD, Lee Stuart BarnbyORCiD, Jerzy BartkeGND, Robert Allan Barton, Helena BiałkowskaORCiD, Anja BillmeierGND, Charles O. Blyth, Rudolf BockGND, Christian BormannGND, Franklin Paul Brady, Robert Brockmann, René BrunGND, Predrag Bunčić, Helen Louise CainesORCiD, Lincoln D. CarrORCiDGND, Daniel A. CebraORCiD, Glenn E. Cooper, John G. CramerGND, Markus CristinzianiORCiDGND, Péter Csató, Jason Dunn, Volker Eckardt, Frank Eckhardt, M. I. Ferguson, Hans Gerhard Fischer, Dominik Bernhard FlierlGND, Zoltán FodorGND, Panagiota FokaORCiD, Peter Freund, Volker FrieseORCiDGND, Matthias Fuchs, Frank GablerGND, Rudolf Ganz, W. Geist, József Gál, Marek GaździckiORCiDGND, Ewa Gładysz-DziaduśORCiD, Jaroslaw Grebieszkow, Jörg GüntherGND, John William HarrisORCiDGND, Sándor Hegyi, Torsten HenkelGND, L. A. Hill, Holm Gero HümmlerGND, George J. Igo, Detlef Irmscher, Peter Martin JacobsORCiD, Peter Graham Jones, Krešo Kadija, Vadim I. KolesnikovORCiD, Anton Konashenok, Marek Kowalski, Brian Lasiuk, Péter LévaiGND, F. Liu, Aleksandr I. MalakhovGND, Spyridon Margetis, Christina MarkertORCiDGND, Georgy L. Melkumov, Andreas Mock, József Molnár, J. M. Nelson, Markus D. OldenburgGND, Grazyna Janina Odyniec, Gabriella Pálla, Apostolos D. Panagiotou, Athanasios PetridisORCiD, Andreas Piper, R. Jefferson PorterORCiD, Arthur M. PoskanzerORCiDGND, Duncan J. Prindle, Falk PühlhoferGND, Wolfgang Hans Rauch, Jeffrey G. Reid, Rainer Arno Ernst Renfordt, Waldemar Retyk, Hans Georg Ritter, Dieter RöhrichORCiD, Christof RolandORCiDGND, Gunther RolandGND, Heinrich Rudolph, Andrzej RybickiORCiD, Andres SandovalORCiD, Hans Sann, Alexei Yu. Semenov, Erich SchäferGND, Dirk Schmischke, Norbert SchmitzGND, Stefan Schönfelder, Peter SeybothORCiDGND, Jürgen SeyerleinGND, Ferenc SiklérORCiD, Ewa Skrzypczak, Raimond SnellingsORCiD, Gordon Thomas Anderson Squier, Reinhard StockGND, Herbert Ströbele, Christof StruckGND, Tatjana ŠušaORCiD, Imre Szentpétery, János SziklaiORCiD, Milton Y. Toy, Thomas A. TrainorORCiD, Stephen TrentalangeORCiD, Thomas UllrichORCiDGND, Maria VassiliouORCiD, Gábor I. VeresORCiD, György Vesztergombi, Danilo VranićGND, Feipeng Wang, Dhammika D. Weerasundara, Siegfried WenigORCiD, Charles A. Whitten, Thomas WienoldGND, Lindsay Wood, Nu Xu, Tim A. Yates, József Zimányi, Xue-Zhou Zhu, Ryszard Zybert
URN:urn:nbn:de:hebis:30-16932
DOI:https://doi.org/10.48550/arXiv.nucl-ex/9810005
ArXiv Id:http://arxiv.org/abs/nucl-ex/9810005
Document Type:Preprint
Language:English
Date of Publication (online):1998/10/28
Year of first Publication:1998
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Contributing Corporation:NA49 Collaboration
Release Date:2005/09/29
Page Number:16
Source:Phys.Lett. B444 (1998) , http://arxiv.org/abs/nucl-ex/9810005
HeBIS-PPN:432313389
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht