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Ramstein, Béatrice ; Adamczewski-Musch, Jörn ; Arnold, Oliver Werner ; Atomssa, Ermias T. ; Behnke, Claudia ; Berger-Chen, Jia-Chii ; Biernat, Jacek ; Blanco, Alberto ; Blume, Christoph ; Böhmer, Michael ; Bordalo, Paula ; Chernenko, Sergey P. ; Deveaux, Christina Anna ; Dybczak, Adrian ; Epple, Eliane ; Fabbietti, Laura ; Fateev, Oleg ; Fonte, Paulo ; Franco, Celso ; Friese, Jürgen ; Fröhlich, Ingo ; Galatyuk, Tetyana ; Garzón, Juan A. ; Gill, Katharina ; Golubeva, Marina ; Guber, Fedor ; Gumberidze, Malgorzata ; Harabasz, Szymon ; Hennino, Thierry ; Hlaváč, Stanislav ; Höhne, Claudia ; Holzmann, Romain ; Ierusalimov, Alexander P. ; Ivashkin, Alexander ; Jurkovič, Martin ; Kämpfer, Burkhard ; Karavicheva, Tatiana L. ; Kardan, Behruz ; Koenig, Ilse ; Koenig, Wolfgang ; Kolb, Burkhard W. ; Korcyl, Grzegorz ; Kornakov, Georgy ; Kotte, Roland ; Krása, Antonin ; Krebs, Erik ; Kuc, Hubert ; Kugler, Andrej ; Kunz, Tobias ; Kurepin, Alexander ; Kurilkin, Aleksey K. ; Kurilkin, Pavel ; Ladygin, Vladimir P. ; Lalik, Rafał Tomasz ; Lapidus, Kirill ; Lebedev, Alexei ; Lopes, Luis Alberto Vieira ; Lorenz, Manuel ; Mahmoud, Tariq ; Maier, Ludwig W. ; Mangiarotti, Alessio ; Markert, Jochen ; Metag, Volker ; Michel, Jan ; Müntz, Christian ; Münzer, Robert Helmut ; Naumann, Lothar ; Palka, Marek ; Parpottas, Yannis ; Pechenov, Vladimir ; Pechenova, Olga ; Petousis, Vlasios ; Pietraszko, Jerzy ; Przygoda, Witold ; Rehnisch, Laura ; Reshetin, Andrey ; Rost, Adrian ; Rustamov, Anar ; Sadovsky, Alexander ; Salabura, Piotr ; Scheib, Timo ; Schmidt-Sommerfeld, Korbinian ; Schuldes, Heidi ; Sellheim, Patrick ; Siebenson, Johannes Stephan ; Silva, Luis ; Sobolev, Yuri G. ; Spataro, Stefano ; Ströbele, Herbert ; Stroth, Joachim ; Strzempek, Paweł ; Sturm, Christian Thomas ; Svoboda, Ondřej ; Tarantola Peloni, Attilio ; Teilab, Khaled ; Tlustý, Pavel ; Traxler, Michael ; Tsertos, Haralabos ; Vasiliev, Taras A. ; Wagner, Vladimir ; Wendisch, Christian ; Wirth, Joana ; Wüstenfeld, Jörn ; Zanevsky, Yuri V. ; Zumbruch, Peter W.
Przygoda, Witold ; Adamczewski-Musch, Jörn ; Arnold, Oliver Werner ; Atomssa, Ermias T. ; Behnke, Claudia ; Berger-Chen, Jia-Chii ; Biernat, Jacek ; Blanco, Alberto ; Blume, Christoph ; Böhmer, Michael ; Bordalo, Paula ; Chernenko, Sergey P. ; Deveaux, Christina Anna ; Dybczak, Adrian ; Epple, Eliane ; Fabbietti, Laura ; Fateev, Oleg ; Fonte, Paulo ; Franco, Celso ; Friese, Jürgen ; Fröhlich, Ingo ; Galatyuk, Tetyana ; Garzón, Juan A. ; Gill, Katharina ; Golubeva, Marina ; Guber, Fedor ; Gumberidze, Malgorzata ; Harabasz, Szymon ; Hennino, Thierry ; Hlaváč, Stanislav ; Höhne, Claudia ; Holzmann, Romain ; Ierusalimov, Alexander P. ; Ivashkin, Alexander ; Jurkovič, Martin ; Kämpfer, Burkhard ; Karavicheva, Tatiana L. ; Kardan, Behruz ; Koenig, Ilse ; Koenig, Wolfgang ; Kolb, Burkhard W. ; Korcyl, Grzegorz ; Kornakov, Georgy ; Kotte, Roland ; Krása, Antonin ; Krebs, Erik ; Kuc, Hubert ; Kugler, Andrej ; Kunz, Tobias ; Kurepin, Alexander ; Kurilkin, Aleksey K. ; Kurilkin, Pavel ; Ladygin, Vladimir P. ; Lalik, Rafał Tomasz ; Lapidus, Kirill ; Lebedev, Alexei ; Lopes, Luis Alberto Vieira ; Lorenz, Manuel ; Mahmoud, Tariq ; Maier, Ludwig W. ; Mangiarotti, Alessio ; Markert, Jochen ; Metag, Volker ; Michel, Jan ; Müntz, Christian ; Münzer, Robert Helmut ; Naumann, Lothar ; Palka, Marek ; Parpottas, Yannis ; Pechenov, Vladimir ; Pechenova, Olga ; Petousis, Vlasios ; Pietraszko, Jerzy ; Ramstein, Béatrice ; Rehnisch, Laura ; Reshetin, Andrey ; Rost, Adrian ; Rustamov, Anar ; Sadovsky, Alexander ; Salabura, Piotr ; Scheib, Timo ; Schmidt-Sommerfeld, Korbinian ; Schuldes, Heidi ; Sellheim, Patrick ; Siebenson, Johannes Stephan ; Silva, Luis ; Sobolev, Yuri G. ; Spataro, Stefano ; Ströbele, Herbert ; Stroth, Joachim ; Strzempek, Paweł ; Sturm, Christian Thomas ; Svoboda, Ondřej ; Tarantola Peloni, Attilio ; Teilab, Khaled ; Tlustý, Pavel ; Traxler, Michael ; Tsertos, Haralabos ; Vasiliev, Taras A. ; Wagner, Vladimir ; Wendisch, Christian ; Wirth, Joana ; Wüstenfeld, Jörn ; Zanevsky, Yuri V. ; Zumbruch, Peter W.
n this paper we report on the investigation of baryonic resonance production in proton-proton collisions at the kinetic energies of 1.25 GeV and 3.5 GeV, based on data measured with HADES. Exclusive channels npπ+ and ppπ0 as well as ppe+e− were studied simultaneously in the framework of a one-boson exchange model. The resonance cross sections were determined from the one-pion channels for Δ(1232) and N(1440) (1.25 GeV) as well as further Δ and N* resonances up to 2 GeV/c2 for the 3.5 GeV data. The data at 1.25 GeV energy were also analysed within the framework of the partial wave analysis together with the set of several other measurements at lower energies. The obtained solutions provided the evolution of resonance production with the beam energy, showing a sizeable non-resonant contribution but with still dominating contribution of Δ(1232)P33. In the case of 3.5 GeV data, the study of the ppe+e− channel gave the insight on the Dalitz decays of the baryon resonances and, in particular, on the electromagnetic transition form-factors in the time-like region. We show that the assumption of a constant electromagnetic transition form-factors leads to underestimation of the yield in the dielectron invariant mass spectrum below the vector mesons pole. On the other hand, a comparison with various transport models shows the important role of intermediate ρ production, though with a large model dependency. The exclusive channels analysis done by the HADES collaboration provides new stringent restrictions on the parameterizations used in the models.
Pietraszko, Jerzy ; Agakishiev, Geydar ; Behnke, Claudia ; Belver, Daniel ; Belyaev, Alexei V. ; Berger-Chen, Jia-Chii ; Blanco, Alberto ; Blume, Christoph ; Böhmer, Michael ; Cabanelas Eiras, Pablo ; Chernenko, Sergey P. ; Dritsa, Christina ; Dybczak, Adrian ; Epple, Eliane ; Fabbietti, Laura ; Fateev, Oleg ; Fonte, Paulo ; Friese, Jürgen ; Fröhlich, Ingo ; Galatyuk, Tetyana ; Garzón, Juan A. ; Gill, Katharina ; Golubeva, Marina ; González-Díaz, Diégo ; Guber, Fedor ; Gumberidze, Malgorzata ; Harabasz, Szymon ; Hennino, Thierry ; Höhne, Claudia ; Holzmann, Romain ; Huck, Patrick ; Ierusalimov, Alexander P. ; Ivashkin, Alexander ; Jurkovič, Martin ; Kämpfer, Burkhard ; Karavicheva, Tatiana L. ; Koenig, Ilse ; Koenig, Wolfgang ; Kolb, Burkhard W. ; Korcyl, Grzegorz ; Kornakov, Georgy ; Kotte, Roland ; Krása, Antonin ; Krebs, Erik ; Krizek, Filip ; Kuc, Hubert ; Kugler, Andrej ; Kurepin, Alexander ; Kurilkin, Aleksey K. ; Kurilkin, Pavel ; Ladygin, Vladimir P. ; Lalik, Rafał Tomasz ; Lang, Simon Martin ; Lapidus, Kirill ; Lebedev, Alexei ; Lopes, Luis Alberto Vieira ; Lorenz, Manuel ; Maier, Ludwig W. ; Mangiarotti, Alessio ; Markert, Jochen ; Metag, Volker ; Michel, Jan ; Müntz, Christian ; Münzer, Robert Helmut ; Naumann, Lothar ; Palka, Marek ; Parpottas, Yannis ; Pechenov, Vladimir ; Pechenova, Olga ; Przygoda, Witold ; Ramstein, Béatrice ; Rehnisch, Laura ; Reshetin, Andrey ; Rustamov, Anar ; Sadovsky, Alexander ; Salabura, Piotr ; Scheib, Timo ; Schuldes, Heidi ; Siebenson, Johannes Stephan ; Sobolev, Yuri G. ; Spataro, Stefano ; Ströbele, Herbert ; Stroth, Joachim ; Strzempek, Paweł ; Sturm, Christian Thomas ; Svoboda, Ondřej ; Tarantola Peloni, Attilio ; Teilab, Khaled ; Tlustý, Pavel ; Traxler, Michael ; Tsertos, Haralabos ; Vasiliev, Taras A. ; Wagner, Vladimir ; Weber, Michael ; Wendisch, Christian ; Wüstenfeld, Jörn ; Yurevich, Sergey ; Zanevsky, Yuri V.
Many QCD based and phenomenological models predict changes of hadron properties in a strongly interacting environment. The results of these models differ significantly and the experimental determination of hadron properties in nuclear matter is essential. In this paper we present a review of selected physics results obtained at GSI Helmholtzzentrum für Schwerionenforschung GmbH by HADES (High-Acceptance Di-Electron Spectrometer). The e+e− pair emission measured for proton and heavy-ion induced collisions is reported together with results on strangeness production. The future HADES activities at the planned FAIR facility are also discussed.
Lorenz, Manuel ; Agakishiev, Geydar ; Behnke, Claudia ; Belver, Daniel ; Belyaev, Alexei V. ; Berger-Chen, Jia-Chii ; Blanco, Alberto ; Blume, Christoph ; Böhmer, Michael ; Cabanelas Eiras, Pablo ; Chernenko, Sergey P. ; Dritsa, Christina ; Dybczak, Adrian ; Epple, Eliane ; Fabbietti, Laura ; Fateev, Oleg ; Fonte, Paulo ; Friese, Jürgen ; Fröhlich, Ingo ; Galatyuk, Tetyana ; Garzón, Juan A. ; Gill, Katharina ; Golubeva, Marina ; González-Díaz, Diégo ; Guber, Fedor ; Gumberidze, Malgorzata ; Harabasz, Szymon ; Hennino, Thierry ; Höhne, Claudia ; Holzmann, Romain ; Huck, Patrick ; Ierusalimov, Alexander P. ; Ivashkin, Alexander ; Jurkovič, Martin ; Kämpfer, Burkhard ; Karavicheva, Tatiana L. ; Koenig, Ilse ; Koenig, Wolfgang ; Kolb, Burkhard W. ; Korcyl, Grzegorz ; Kornakov, Georgy ; Kotte, Roland ; Krása, Antonin ; Krebs, Erik ; Krizek, Filip ; Kuc, Hubert ; Kugler, Andrej ; Kurepin, Alexander ; Kurilkin, Aleksey K. ; Kurilkin, Pavel ; Ladygin, Vladimir P. ; Lalik, Rafał Tomasz ; Lang, Simon Martin ; Lapidus, Kirill ; Lebedev, Alexei ; Lopes, Luis Alberto Vieira ; Maier, Ludwig W. ; Mangiarotti, Alessio ; Markert, Jochen ; Metag, Volker ; Michel, Jan ; Müntz, Christian ; Münzer, Robert Helmut ; Naumann, Lothar ; Palka, Marek ; Parpottas, Yannis ; Pechenov, Vladimir ; Pechenova, Olga ; Pietraszko, Jerzy ; Przygoda, Witold ; Ramstein, Béatrice ; Rehnisch, Laura ; Reshetin, Andrey ; Rustamov, Anar ; Sadovsky, Alexander ; Salabura, Piotr ; Scheib, Timo ; Schuldes, Heidi ; Siebenson, Johannes Stephan ; Sobolev, Yuri G. ; Spataro, Stefano ; Ströbele, Herbert ; Stroth, Joachim ; Strzempek, Paweł ; Sturm, Christian Thomas ; Svoboda, Ondřej ; Tarantola Peloni, Attilio ; Teilab, Khaled ; Tlustý, Pavel ; Traxler, Michael ; Tsertos, Haralabos ; Vasiliev, Taras A. ; Wagner, Vladimir ; Weber, Michael ; Wendisch, Christian ; Wüstenfeld, Jörn ; Yurevich, Sergey ; Zanevsky, Yuri V.
The High Acceptance DiElectron Spectrometer HADES [1] is installed at the Helmholtzzentrum für Schwerionenforschung (GSI) accelerator facility in Darmstadt. It investigates dielectron emission and strangeness production in the 1-3 AGeV regime. A recent experiment series focusses on medium-modifications of light vector mesons in cold nuclear matter. In two runs, p+p and p+Nb reactions were investigated at 3.5 GeV beam energy; about 9·109 events have been registered. In contrast to other experiments the high acceptance of the HADES allows for a detailed analysis of electron pairs with low momenta relative to nuclear matter, where modifications of the spectral functions of vector mesons are predicted to be most prominent. Comparing these low momentum electron pairs to the reference measurement in the elementary p+p reaction, we find in fact a strong modification of the spectral distribution in the whole vector meson region.
Kurilkin, Pavel ; Agakishiev, Geydar ; Behnke, Claudia ; Belver, Daniel ; Belyaev, Alexei V. ; Berger-Chen, Jia-Chii ; Blanco, Alberto ; Blume, Christoph ; Böhmer, Michael ; Cabanelas Eiras, Pablo ; Chernenko, Sergey P. ; Dritsa, Christina ; Dybczak, Adrian ; Epple, Eliane ; Fabbietti, Laura ; Fateev, Oleg ; Fonte, Paulo J. R. ; Friese, Jürgen ; Fröhlich, Ingo ; Galatyuk, Tetyana ; Garzón, Juan A. ; Gill, Katharina ; Golubeva, Marina ; González-Díaz, Diégo ; Guber, Fedor ; Gumberidze, Malgorzata ; Harabasz, Szymon ; Hennino, Thierry ; Holzmann, Romain ; Huck, Patrick ; Höhne, Claudia ; Ierusalimov, Alexander P. ; Ivashkin, Alexander ; Jurkovič, Martin ; Kämpfer, Burkhard ; Karavicheva, Tatiana L. ; Koenig, Ilse ; Koenig, Wolfgang ; Kolb, Burkhard W. ; Korcyl, Grzegorz ; Kornakov, Georgy ; Kotte, Roland ; Krása, Antonin ; Krebs, Erik ; Krizek, Filip ; Kuc, Hubert ; Kugler, Andrej ; Kurepin, Alexander ; Kurilkin, Aleksey K. ; Ladygin, Vladimir P. ; Lalik, Rafał Tomasz ; Lang, Simon Martin ; Lapidus, Kirill ; Lebedev, Alexei ; Lopes, Luis Alberto Vieira ; Lorenz, Manuel ; Maier, Ludwig W. ; Mangiarotti, Alessio ; Markert, Jochen ; Metag, Volker ; Michel, Jan ; Müntz, Christian ; Münzer, Robert Helmut ; Naumann, Lothar ; Palka, Marek ; Parpottas, Yannis ; Pechenov, Vladimir ; Pechenova, Olga ; Pietraszko, Jerzy ; Przygoda, Witold ; Ramstein, Béatrice ; Rehnisch, Laura ; Reshetin, Andrey ; Rustamov, Anar ; Sadovsky, Alexander ; Salabura, Piotr ; Scheib, Timo ; Schuldes, Heidi ; Siebenson, Johannes Stephan ; Sobolev, Yuri G. ; Spataro, Stefano ; Ströbele, Herbert ; Stroth, Joachim ; Strzempek, Paweł ; Sturm, Christian Thomas ; Svoboda, Ondřej ; Tarantola Peloni, Attilio ; Teilab, Khaled ; Tlustý, Pavel ; Traxler, Michael ; Tsertos, Haralabos ; Vasiliev, Taras A. ; Wagner, Vladimir ; Weber, Michael ; Wendisch, Christian ; Wüstenfeld, Jörn ; Yurevich, Sergey ; Zanevsky, Yuri V.
New results on the differential cross section in deuteron-proton elastic scattering are obtained at the deuteron kinetic energy of 2.5 GeV with the HADES spectrometer. The angular range of 69° – 125° in the center of mass system is covered. The obtained results are compared with the relativistic multiple scattering model calculation using the CD-Bonn deuteron wave function. The data at fixed scattering angles in the c.m. are in qualitative agreement with the constituent counting rules prediction.
Epple, Eliane ; Adamczewski-Musch, Jörn ; Arnold, Oliver Werner ; Atomssa, Ermias T. ; Behnke, Claudia ; Berger-Chen, Jia-Chii ; Biernat, Jacek ; Blanco, Alberto ; Blume, Christoph ; Böhmer, Michael ; Bordalo, Paula ; Chernenko, Sergey P. ; Deveaux, Christina Anna ; Dybczak, Adrian ; Fabbietti, Laura ; Fateev, Oleg ; Fonte, Paulo ; Franco, Celso ; Friese, Jürgen ; Fröhlich, Ingo ; Galatyuk, Tetyana ; Garzón, Juan A. ; Gill, Katharina ; Golubeva, Marina ; Guber, Fedor ; Gumberidze, Malgorzata ; Harabasz, Szymon ; Hennino, Thierry ; Hlaváč, Stanislav ; Höhne, Claudia ; Holzmann, Romain ; Ierusalimov, Alexander P. ; Ivashkin, Alexander ; Jurkovič, Martin ; Kämpfer, Burkhard ; Karavicheva, Tatiana L. ; Kardan, Behruz ; Koenig, Ilse ; Koenig, Wolfgang ; Kolb, Burkhard W. ; Korcyl, Grzegorz ; Kornakov, Georgy ; Kotte, Roland ; Krása, Antonin ; Krebs, Erik ; Kuc, Hubert ; Kugler, Andrej ; Kunz, Tobias ; Kurepin, Alexander ; Kurilkin, Aleksey K. ; Kurilkin, Pavel ; Ladygin, Vladimir P. ; Lalik, Rafał Tomasz ; Lapidus, Kirill ; Lebedev, Alexei ; Lopes, Luis Alberto Vieira ; Lorenz, Manuel ; Mahmoud, Tariq ; Maier, Ludwig W. ; Mangiarotti, Alessio ; Markert, Jochen ; Metag, Volker ; Michel, Jan ; Müntz, Christian ; Münzer, Robert Helmut ; Naumann, Lothar ; Palka, Marek ; Parpottas, Yannis ; Pechenov, Vladimir ; Pechenova, Olga ; Petousis, Vlasios ; Pietraszko, Jerzy ; Przygoda, Witold ; Ramstein, Béatrice ; Rehnisch, Laura ; Reshetin, Andrey ; Rost, Adrian ; Rustamov, Anar ; Sadovsky, Alexander ; Salabura, Piotr ; Scheib, Timo ; Schmidt-Sommerfeld, Korbinian ; Schuldes, Heidi ; Sellheim, Patrick ; Siebenson, Johannes Stephan ; Silva, Luis ; Sobolev, Yuri G. ; Spataro, Stefano ; Ströbele, Herbert ; Stroth, Joachim ; Strzempek, Paweł ; Sturm, Christian Thomas ; Svoboda, Ondřej ; Tarantola Peloni, Attilio ; Teilab, Khaled ; Tlustý, Pavel ; Traxler, Michael ; Tsertos, Haralabos ; Vasiliev, Taras A. ; Wagner, Vladimir ; Wendisch, Christian ; Wirth, Joana ; Wüstenfeld, Jörn ; Zanevsky, Yuri V. ; Zumbruch, Peter W.
his contribution aims to give a basic overview of the latest results regarding the production of resonances in different collision systems. The results were extracted from experimental data collected with HADES that is a multipurpose detector located at the GSI Helmholtzzentrum, Darmstadt. The main points discussed here are: the properties of the strange resonances Λ(1405) and Σ(1385), the role of Δ’s as a source of pions in the final state, the production dynamics reflected in form of differential cross sections, and the role of the ϕ meson as a source for K− particles.
Partial wave analysis of the reaction p(3.5 GeV) + p → pK +Λ to search for the "ppK−" bound state
(2015)
Agakishiev, Geydar ; Arnold, Oliver Werner ; Belver, Daniel ; Belyaev, A. ; Berger-Chen, Jia-Chii ; Blanco, Alberto ; Böhmer, Michael ; Boyard, Jean-Louis ; Cabanelas Eiras, Pablo ; Chernenko, Sergey P. ; Dybczak, Adrian ; Epple, Eliane ; Fabbietti, Laura ; Fateev, Oleg ; Finocchiaro, Paolo ; Fonte, Paulo ; Friese, Jürgen ; Fröhlich, Ingo ; Galatyuk, Tetyana ; Garzón, Juan A. ; Gernhäuser, Roman ; Göbel, Kathrin ; Golubeva, Marina ; González-Díaz, Diégo ; Guber, Fedor ; Gumberidze, Malgorzata ; Heinz, T. ; Hennino, Thierry ; Holzmann, Romain ; Ierusalimov, Alexander P. ; Iori, Ileana ; Ivashkin, Alexander ; Jurkovič, Martin ; Kämpfer, Burkhard ; Karavicheva, Tatiana L. ; Koenig, Ilse ; Koenig, W. ; Kolb, Burkhard W. ; Kornakov, Georgy ; Kotte, Roland ; Krása, Antonin ; Krizek, Filip ; Krücken, Reiner ; Kuc, Hubert ; Kühn, Wolfgang ; Kugler, Andrej ; Kunz, Tobias ; Kurepin, Alexander ; Ladygin, Vladimir P. ; Lalik, Rafał Tomasz ; Lapidus, Kirill ; Lebedev, Alexei ; Lopes, Luis Alberto Vieira ; Lorenz, Manuel ; Maier, Ludwig W. ; Mangiarotti, Alessio ; Markert, Jochen ; Metag, Volker ; Michel, Jan ; Müntz, Christian ; Münzer, Robert Helmut ; Naumann, Lothar ; Pachmayer, Yvonne C. ; Palka, Marek ; Parpottas, Yannis ; Pechenov, Vladimir ; Pechenova, Olga ; Pietraszko, Jerzy ; Przygoda, Witold ; Ramstein, Béatrice ; Reshetin, Andrey ; Rustamov, Anar ; Sadovsky, Alexander ; Salabura, Piotr ; Schmah, Alexander ; Schwab, Erwin ; Siebenson, Johannes Stephan ; Sobolev, Yuri G. ; Spataro, Stefano ; Spruck, Björn ; Ströbele, Herbert ; Stroth, Joachim ; Sturm, C. ; Tarantola Peloni, Attilio ; Teilab, Khaled ; Tlustý, Pavel ; Traxler, Michael ; Tsertos, Haralabos ; Vasiliev, Taras A. ; Wagner, Vladimir ; Weber, Michael ; Wendisch, Christian ; Wüstenfeld, Jörn ; Yurevich, Sergey ; Zanevsky, Yuri V. ; Sarantsev, Andrei V.
Employing the Bonn–Gatchina partial wave analysis framework (PWA), we have analyzed HADES data of the reaction p(3.5 GeV) + p → pK +Λ. This reaction might contain information about the kaonic cluster “ppK −” (with quantum numbers J P = 0− and total isospin I = 1/2) via its decay into pΛ. Due to interference effects in our coherent description of the data, a hypothetical KNN (or, specifically “ppK −”) cluster signal need not necessarily show up as a pronounced feature (e.g. a peak) in an invariant mass spectrum like pΛ. Our PWA analysis includes a variety of resonant and non-resonant intermediate states and delivers a good description of our data (various angular distributions and two-hadron invariant mass spectra) without a contribution of a KNN cluster. At a confidence level of CLs = 95% such a cluster cannot contribute more than 2–12% to the total cross section with a pK +Λ final state, which translates into a production cross-section between 0.7 μb and 4.2 μb, respectively. The range of the upper limit depends on the assumed cluster mass, width and production process.
Adler, Clemens ; Ahammed, Zubayer ; Allgower, Chris ; Anderson, Mike ; Averichev, Georgy S. ; Balewski, Jan ; Barannikova, Olga ; Barnby, Lee Stuart ; Baudot, Jérome ; Bekele, Selemon ; Belaga, Victoria Vladimirovna ; Bellwied, Rene ; Berger, Jens ; Bichsel, Hans ; Bland, Leslie C. ; Blyth, Charles O. ; Bonner, Billy E. ; Bossingham, R. ; Boucham, Abdelkrim ; Brandin, Andrei V. ; Caines, Helen Louise ; Calderón de la Barca Sánchez, Manuel ; Cardenas, Andrés ; Carroll, J. ; Castillo Castellanos, Javier Ernesto ; Castro, M. ; Cebra, Daniel A. ; Chattopadhyay, S. ; Chen, M. L. ; Chen, Y. ; Chernenko, Sergey P. ; Cherney, Michael Gerard ; Chikanian, Alexei ; Choi, B. ; Christie, William ; Coffin, Jean Pierre ; Conin, Laurent ; Cormier, Thomas Michael ; Cramer, John G. ; Crawford, Henry J. ; DeMello, M. ; Deng, W. S. ; Derevschikov, Anatoly A. ; Didenko, Lidia ; Draper, James E. ; Dunin, V. B. ; Dunlop, James C. ; Eckardt, Volker ; Efimov, Leonid G. ; Emelianov, V. ; Engelage, Jon M. ; Eppley, Geary Wareham ; Erazmus, Barbara Ewa ; Fachini, Patricia ; Ferguson, M. I. ; Finch, Evan ; Fisyak, Yuri V. ; Flierl, Dominik Bernhard ; Foley, K. J. ; Gagunashvili, N. ; Gans, J. ; Germain, Marie ; Geurts, Frank ; Ghazikhanian, Vahe ; Grabski, J. ; Grachov, Oleg A. ; Greiner, D. ; Grigoriev, Vladislav A. ; Gushin, E. ; Hallman, Timothy J. ; Hardtke, David H. ; Harris, John W. ; Heffner, Michael D. ; Heppelmann, Steven Francis ; Herston, T. ; Hippolyte, Boris ; Hirsch, Andrew S. ; Hjort, Eric ; Hoffmann, Gerald W. ; Horsley, M. ; Huang, Huan Zhong ; Humanic, Thomas J. ; Hümmler, Holm Gero ; Igo, George J. ; Ishihara, A. ; Ivanshin, Yu. I. ; Jacobs, Peter Martin ; Jacobs, William W. ; Janik, Michał ; Johnson, I. ; Jones, Peter Graham ; Judd, Eleanor G. ; Kaneta, Kaneta ; Kaplan, Morton ; Keane, Declan ; Khodinov, A. ; Kisiel, Adam Ryszard ; Klay, Jennifer Lynn ; Klein, Spencer Robert ; Klyachko, A. ; Konstantinov, A. S. ; Kotchenda, L. ; Kovalenko, A. D. ; Kramer, M. ; Kravtsov, Peter ; Krueger, Keith William ; Kuhn, Christian Claude ; Kulikov, Anatoly I. ; Kunde, Gerd J. ; Kunz, Christopher Lee ; Kutuev, R. Kh. ; Kuznetsov, A. A. ; Lamas-Valverde, Jose ; Lamont, Matthew A. C. ; Landgraf, Jeffery M. ; Lange, S. ; Lansdell, Curtis Patrick Leon ; Lasiuk, Brian ; Laue, Frank ; Lebedev, Alexei ; LeCompte, T. ; Leontiev, V. M. ; Leszczynski, P. ; LeVine, Micheal J. ; Li, Q. ; Li, Q. ; Lindenbaum, Sam J. ; Lisa, Michael A. ; Ljubicic, Tonko A. ; Llope, William Joseph ; LoCurto, G. ; Long, H. ; Longacre, Ronald S. ; Lopez-Noriega, M. ; Love, William A. ; Lynn, David ; Madansky, L. ; Majka, Richard Daniel ; Maliszewski, A. ; Margetis, Spyridon ; Martin, L. ; Marx, Jay N. ; Matis, Howard S. ; Matulenko, Yuri A. ; McShane, Tom S. ; Melnick, Yu. ; Meščanin, Aleksei P. ; Milosevich, Z. ; Minaev, Nikolai G. ; Mitchell, J. ; Moiseenko, V. A. ; Moltz, D. ; Moore, C. F. ; Morozov, V. ; de Moura, M. M. ; Munhoz, Marcelo Gameiro ; Mutchler, G. S. ; Nelson, John M. ; Nevski, P. ; Nikitin, Vladimir A. ; Nogach, Larisa V. ; Norman, B. ; Nurušev, Sandibek B. ; Nystrand, Joakim Ingemar ; Odyniec, Grazyna Janina ; Ogawa, Akio ; Ogilvie, C. A. ; Oldenburg, Markus D. ; Olson, Douglas L. ; Paic, Guy ; Pandey, S. U. ; Panebratsev, Yuri ; Panitkin, Sergei Yurievich ; Pavlinov, A. I. ; Pawlak, Tomasz Jan ; Perevoztchikov, V. ; Peryt, Wiktor Stanislaw ; Petrov, V. A. ; Pinganaud, W. ; Platner, E. ; Pluta, Jan Marian ; Porile, Norbert T. ; Porter, Jeffrey Brent ; Poskanzer, Arthur M. ; Potrebenikova, E. ; Prindle, Duncan J. ; Pruneau, Claude A. ; Radomski, S. ; Rai, Gulshan ; Ravel, Olivier ; Ray, Robert L. ; Razin, Sergej V. ; Reichhold, Dennis Michael ; Reid, Jeffrey G. ; Retiere, Fabrice ; Ridiger, Alexey ; Ritter, Hans Georg ; Roberts, Jabus B. ; Rogachevski, O. V. ; Roy, Christelle Sophie ; Russ, D. ; Rykov, Vladimir L. ; Sakrejda, Iwona ; Sandweiss, Jack H. ; Saulys, A. C. ; Savin, Igor A. ; Schambach, Joachim ; Scharenberg, Rolf Paul ; Schmitz, Norbert ; Schroeder, Lee S. ; Schüttauf, Andreas ; Seger, Janet Elizabeth ; Seliverstov, D. ; Seyboth, Peter ; Shestermanov, Konstantin E. ; Shimanskii, S. S. ; Shvetcov, V. S. ; Skoro, Goran P. ; Smirnov, Nikolai ; Snellings, Raimond ; Sowinski, James ; Spinka, Harold. M. ; Srivastava, Brijesh Kumar ; Stephenson, Edward J. ; Stock, Reinhard ; Stolpovsky, Alexander ; Strichanov, Michail Nikolaevič ; Stringfellow, Blair ; Ströbele, Herbert ; Struck, Christof ; Suaide, Alexandre Alarcon do Passo ; Sugarbaker, Evan R. ; Suire, Christophe Pierre ; Symons, Timothy James MacNeil ; Toledo, Alejandro Szanto de ; Szarwas, Piotr ; Takahashi, Jun ; Tang, Aihong ; Thomas, James H. ; Tikhomirov, V. ; Trainor, Thomas A. ; Trentalange, Stephen ; Tokarev, Mikhail V. ; Tonjes, Marguerite Belt ; Trofimov, V. ; Tsai, Oleg D. ; Turner, K. ; Ullrich, Thomas ; Underwood, David G. ; Van Buren, Gene ; VanderMolen, A. M. ; Vanyashin, A. ; Vasilevski, I. M. ; Vasiliev, Alexander Nikolaevich ; Vigdor, Steven E. ; Voloshin, Sergei ; Wang, F. ; Ward, H. ; Wells, R. ; Wenaus, T. ; Westfall, Gary D. ; Whitten, Charles A. ; Wieman, Howard ; Willson, Robert ; Wissink, Scott W. ; Witt, Richard ; Xu, N. ; Xu, Z. ; Yakutin, A. E. ; Yamamoto, E. ; Yang, J. ; Yepes, Pablo P. ; Yokosawa, A. ; Yurevich, Vladimir Yurevich ; Zanevski, Y. V. ; Zhang, J. ; Zhang, W. M. ; Zoulkarneev, R. ; Zubarev, A. N.
We report results on the ratio of midrapidity antiproton-to-proton yields in Au+Au collisions at sqrt[sNN] = 130 GeV per nucleon pair as measured by the STAR experiment at RHIC. Within the rapidity and transverse momentum range of | y|<0.5 and 0.4<pt<1.0 GeV/c, the ratio is essentially independent of either transverse momentum or rapidity, with an average of 0.65±0.01(stat)±0.07(syst) for minimum bias collisions. Within errors, no strong centrality dependence is observed. The results indicate that at this RHIC energy, although the p-p-bar pair production becomes important at midrapidity, a significant excess of baryons over antibaryons is still present.
Adler, Clemens ; Ahammed, Zubayer ; Allgower, Chris ; Anderson, Mike ; Averichev, Georgy S. ; Balewski, Jan ; Barannikova, Olga ; Barnby, Lee Stuart ; Baudot, Jérome ; Bekele, Selemon ; Belaga, Victoria Vladimirovna ; Bellwied, Rene ; Berger, Jens ; Bichsel, Hans ; Bland, Leslie C. ; Blyth, Charles O. ; Bonner, Billy E. ; Bossingham, R. ; Boucham, Abdelkrim ; Brandin, Andrei V. ; Caines, Helen Louise ; Calderón de la Barca Sánchez, Manuel ; Cardenas, Andrés ; Carroll, J. ; Castillo Castellanos, Javier Ernesto ; Castro, M. ; Cebra, Daniel A. ; Chattopadhyay, S. ; Chen, M. L. ; Chen, Y. ; Chernenko, Sergey P. ; Cherney, Michael Gerard ; Chikanian, Alexei ; Choi, B. ; Christie, William ; Coffin, Jean Pierre ; Conin, Laurent ; Cormier, Thomas Michael ; Cramer, John G. ; Crawford, Henry J. ; DeMello, M. ; Deng, W. S. ; Derevschikov, Anatoly A. ; Didenko, Lidia ; Draper, James E. ; Dunin, V. B. ; Dunlop, James C. ; Eckardt, Volker ; Efimov, Leonid G. ; Emelianov, V. ; Engelage, Jon M. ; Eppley, Geary Wareham ; Erazmus, Barbara Ewa ; Fachini, Patricia ; Ferguson, M. I. ; Finch, Evan ; Fisyak, Yuri V. ; Flierl, Dominik Bernhard ; Foley, K. J. ; Gagunashvili, N. ; Gans, J. ; Germain, Marie ; Geurts, Frank ; Ghazikhanian, Vahe ; Grabski, J. ; Grachov, Oleg A. ; Greiner, D. ; Grigoriev, Vladislav A. ; Gushin, E. ; Hallman, Timothy J. ; Hardtke, David H. ; Harris, John W. ; Heffner, Michael D. ; Heppelmann, Steven Francis ; Herston, T. ; Hippolyte, Boris ; Hirsch, Andrew S. ; Hjort, Eric ; Hoffmann, Gerald W. ; Horsley, M. ; Huang, Huan Zhong ; Humanic, Thomas J. ; Hümmler, Holm Gero ; Igo, George J. ; Ishihara, A. ; Ivanshin, Yu. I. ; Jacobs, Peter Martin ; Jacobs, William W. ; Janik, Michał ; Johnson, I. ; Jones, Peter Graham ; Judd, Eleanor G. ; Kaneta, Kaneta ; Kaplan, Morton ; Keane, Declan ; Khodinov, A. ; Kisiel, Adam Ryszard ; Klay, Jennifer Lynn ; Klein, Spencer Robert ; Klyachko, A. ; Konstantinov, A. S. ; Kotchenda, L. ; Kovalenko, A. D. ; Kramer, M. ; Kravtsov, Peter ; Krueger, Keith William ; Kuhn, Christian Claude ; Kulikov, Anatoly I. ; Kunde, Gerd J. ; Kunz, Christopher Lee ; Kutuev, R. Kh. ; Kuznetsov, A. A. ; Lamas-Valverde, Jose ; Lamont, Matthew A. C. ; Landgraf, Jeffery M. ; Lange, S. ; Lansdell, Curtis Patrick Leon ; Lasiuk, Brian ; Laue, Frank ; Lebedev, Alexei ; LeCompte, T. ; Leontiev, V. M. ; Leszczynski, P. ; LeVine, Micheal J. ; Li, Q. ; Li, Q. ; Lindenbaum, Sam J. ; Lisa, Michael A. ; Ljubicic, Tonko A. ; Llope, William Joseph ; LoCurto, G. ; Long, H. ; Longacre, Ronald S. ; Lopez-Noriega, M. ; Love, William A. ; Lynn, David ; Madansky, L. ; Majka, Richard Daniel ; Maliszewski, A. ; Margetis, Spyridon ; Martin, L. ; Marx, Jay N. ; Matis, Howard S. ; Matulenko, Yuri A. ; McShane, Tom S. ; Melnick, Yu. ; Meščanin, Aleksei P. ; Milosevich, Z. ; Minaev, Nikolai G. ; Mitchell, J. ; Moiseenko, V. A. ; Moltz, D. ; Moore, C. F. ; Morozov, V. ; de Moura, M. M. ; Munhoz, Marcelo Gameiro ; Mutchler, G. S. ; Nelson, John M. ; Nevski, P. ; Nikitin, Vladimir A. ; Nogach, Larisa V. ; Norman, B. ; Nurušev, Sandibek B. ; Nystrand, Joakim Ingemar ; Odyniec, Grazyna Janina ; Ogawa, Akio ; Ogilvie, C. A. ; Oldenburg, Markus D. ; Olson, Douglas L. ; Paic, Guy ; Pandey, S. U. ; Panebratsev, Yuri ; Panitkin, Sergei Yurievich ; Pavlinov, A. I. ; Pawlak, Tomasz Jan ; Perevoztchikov, V. ; Peryt, Wiktor Stanislaw ; Petrov, V. A ; Pinganaud, W. ; Platner, E. ; Pluta, Jan Marian ; Porile, Norbert T. ; Porter, Jeffrey Brent ; Poskanzer, Arthur M. ; Potrebenikova, E. ; Prindle, Duncan J. ; Pruneau, Claude A. ; Radomski, S. ; Rai, Gulshan ; Ravel, Olivier ; Ray, Robert L. ; Razin, Sergej V. ; Reichhold, Dennis Michael ; Reid, Jeffrey G. ; Retiere, Fabrice ; Ridiger, Alexey ; Ritter, Hans Georg ; Roberts, Jabus B. ; Rogachevski, O. V. ; Roy, Christelle Sophie ; Russ, D. ; Rykov, Vladimir L. ; Sakrejda, Iwona ; Sandweiss, Jack H. ; Saulys, A. C. ; Savin, Igor A. ; Schambach, Joachim ; Scharenberg, Rolf Paul ; Schmitz, Norbert ; Schroeder, Lee S. ; Schüttauf, Andreas ; Schweda, Kai ; Seger, Janet Elizabeth ; Seliverstov, D. ; Seyboth, Peter ; Shestermanov, Konstantin E. ; Shimanskii, S. S. ; Shvetcov, V. S. ; Skoro, Goran P. ; Smirnov, Nikolai ; Snellings, Raimond ; Sowinski, James ; Spinka, Harold. M. ; Srivastava, Brijesh Kumar ; Stephenson, Edward J. ; Stock, Reinhard ; Stolpovsky, Alexander ; Strichanov, Michail Nikolaevič ; Stringfellow, Blair ; Ströbele, Herbert ; Struck, Christof ; Suaide, Alexandre Alarcon do Passo ; Sugarbaker, Evan R. ; Suire, Christophe Pierre ; Symons, Timothy James MacNeil ; de Toledo, A. Szanto ; Szarwas, Piotr ; Takahashi, Jun ; Tang, Aihong ; Thomas, James H. ; Tikhomirov, V. ; Trainor, Thomas A. ; Trentalange, Stephen ; Tokarev, Mikhail V. ; Tonjes, Marguerite Belt ; Trofimov, V. ; Tsai, Oleg D. ; Turner, K. ; Ullrich, Thomas ; Underwood, David G. ; Van Buren, Gene ; VanderMolen, A. M. ; Vanyashin, A. ; Vasilevski, I. M. ; Vasiliev, Alexander Nikolaevich ; Vigdor, Steven E. ; Voloshin, Sergei ; Wang, F. ; Ward, H. ; Wells, R. ; Wenaus, T. ; Westfall, Gary D. ; Whitten, Charles A. ; Wieman, Howard ; Willson, Robert ; Wissink, Scott W. ; Witt, Richard ; Xu, N. ; Xu, Z. ; Yakutin, A. E. ; Yamamoto, E. ; Yang, J. ; Yepes, Pablo P. ; Yokosawa, A. ; Yurevich, Vladimir Yurevich ; Zanevski, Y. V. ; Zhang, J. ; Zhang, W. M. ; Zoulkarneev, R. ; Zubarev, A. N.
Adler, Clemens ; Ahammed, Zubayer ; Allgower, Chris ; Amonett, John ; Anderson, Bryon D. ; Anderson, Mike ; Averichev, Georgy S. ; Balewski, Jan ; Barannikova, Olga ; Barnby, Lee Stuart ; Baudot, Jérome ; Bekele, Selemon ; Belaga, Victoria Vladimirovna ; Bellwied, Rene ; Berger, Jens ; Bichsel, Hans ; Bland, Leslie C. ; Blyth, Charles O. ; Bonner, Billy E. ; Boucham, Abdelkrim ; Brandin, Andrei V. ; Cadman, R. V. ; Caines, Helen Louise ; Calderón de la Barca Sánchez, Manuel ; Cardenas, Andrés ; Carroll, J. ; Castillo Castellanos, Javier Ernesto ; Castro, M. ; Cebra, Daniel A. ; Chattopadhyay, S. ; Chen, M. L. ; Chen, Y. ; Chernenko, Sergey P. ; Cherney, Michael Gerard ; Chikanian, Alexei ; Choi, B. ; Christie, William ; Coffin, Jean Pierre ; Cormier, Thomas Michael ; Cramer, John G. ; Crawford, Henry J. ; DeMello, M. ; Deng, W. S. ; Derevschikov, Anatoly A. ; Didenko, Lidia ; Draper, James E. ; Dunin, V. B. ; Dunlop, James C. ; Eckardt, Volker ; Efimov, Leonid G. ; Emelianov, V. ; Engelage, Jon M. ; Eppley, Geary Wareham ; Erazmus, Barbara Ewa ; Fachini, Patricia ; Faine, V. ; Finch, Evan ; Fisyak, Yuri V. ; Flierl, Dominik Bernhard ; Foley, K. J. ; Fu, J. ; Gagunashvili, N. ; Gans, J. ; Gaudichet, L. ; Germain, Marie ; Geurts, Frank ; Ghazikhanian, Vahe ; Grabski, J. ; Grachov, Oleg A. ; Greiner, D. ; Grigoriev, Vladislav A. ; Guedon, M. ; Gushin, E. ; Hallman, Timothy J. ; Hardtke, David H. ; Harris, John W. ; Heffner, Michael D. ; Heppelmann, Steven Francis ; Herston, T. ; Hippolyte, Boris ; Hirsch, Andrew S. ; Hjort, Eric ; Hoffmann, Gerald W. ; Horsley, M. ; Huang, Huan Zhong ; Humanic, Thomas J. ; Hümmler, Holm Gero ; Igo, George J. ; Ishihara, A. ; Ivanshin, Yu. I. ; Jacobs, Peter Martin ; Jacobs, William W. ; Janik, Michał ; Johnson, I. ; Jones, Peter Graham ; Judd, Eleanor G. ; Kaneta, Kaneta ; Kaplan, Morton ; Keane, Declan ; Kisiel, Adam Ryszard ; Klay, Jennifer Lynn ; Klein, Spencer Robert ; Klyachko, A. ; Konstantinov, A. S. ; Kotchenda, L. ; Kovalenko, A. D. ; Kramer, M. ; Kravtsov, Peter ; Krueger, Keith William ; Kuhn, Christian Claude ; Kulikov, Anatoly I. ; Kunde, Gerd J. ; Kunz, Christopher Lee ; Kutuev, R. Kh. ; Kuznetsov, A. A. ; Lakehal-Ayat, L. ; Lamas-Valverde, Jose ; Lamont, Matthew A. C. ; Landgraf, Jeffery M. ; Lange, S. ; Lansdell, Curtis Patrick Leon ; Lasiuk, Brian ; Laue, Frank ; Lebedev, Alexei ; LeCompte, T. ; Lednický, Richard ; Leontiev, V. M. ; LeVine, Micheal J. ; Li, Q. ; Li, Q. ; Lindenbaum, Sam J. ; Lisa, Michael A. ; Ljubicic, Tonko A. ; Llope, William Joseph ; LoCurto, G. ; Long, H. ; Longacre, Ronald S. ; Lopez-Noriega, M. ; Love, William A. ; Lynn, David ; Majka, Richard Daniel ; Margetis, Spyridon ; Martin, L. ; Marx, Jay N. ; Matis, Howard S. ; Matulenko, Yuri A. ; McShane, Tom S. ; Meissner, F. ; Melnick, Yu. ; Meščanin, Aleksei P. ; Messer, Matthias ; Miller, M. L. ; Milosevich, Z. ; Minaev, Nikolai G. ; Mitchell, J. ; Moiseenko, V. A. ; Moltz, D. ; Moore, C. F. ; Morozov, V. ; de Moura, M. M. ; Munhoz, Marcelo Gameiro ; Mutchler, G. S. ; Nelson, John M. ; Nevski, P. ; Nikitin, Vladimir A. ; Nogach, Larisa V. ; Norman, B. ; Nurušev, Sandibek B. ; Odyniec, Grazyna Janina ; Ogawa, Akio ; Okorokov, Vitaly A. ; Oldenburg, Markus D. ; Olson, Douglas L. ; Paic, Guy ; Pandey, S. U. ; Panebratsev, Yuri ; Panitkin, Sergei Yurievich ; Pavlinov, A. I. ; Pawlak, Tomasz Jan ; Perevoztchikov, V. ; Peryt, Wiktor Stanislaw ; Petrov, V. A. ; Platner, E. ; Pluta, Jan Marian ; Porile, Norbert T. ; Porter, Jeffrey Brent ; Poskanzer, Arthur M. ; Potrebenikova, E. ; Prindle, Duncan J. ; Pruneau, Claude A. ; Radomski, S. ; Rai, Gulshan ; Ravel, Olivier ; Ray, Robert L. ; Razin, Sergej V. ; Reichhold, Dennis Michael ; Reid, Jeffrey G. ; Retiere, Fabrice ; Ridiger, Alexey ; Ritter, Hans Georg ; Roberts, Jabus B. ; Rogachevski, O. V. ; Romero, Juan L. ; Roy, Christelle Sophie ; Russ, D. ; Rykov, Vladimir L. ; Sakrejda, Iwona ; Sandweiss, Jack H. ; Saulys, A. C. ; Savin, Igor A. ; Schambach, Joachim ; Scharenberg, Rolf Paul ; Schmitz, Norbert ; Schroeder, Lee S. ; Schüttauf, Andreas ; Schweda, Kai ; Seger, Janet Elizabeth ; Seliverstov, D. ; Seyboth, Peter ; Shahaliev, Ehtiram ; Shestermanov, Konstantin E. ; Shimanskii, S. S. ; Shvetcov, V. S. ; Skoro, Goran P. ; Smirnov, Nikolai ; Snellings, Raimond ; Sowinski, James ; Spinka, Harold. M. ; Srivastava, Brijesh Kumar ; Stephenson, Edward J. ; Stock, Reinhard ; Stolpovsky, Alexander ; Strichanov, Michail Nikolaevič ; Stringfellow, Blair ; Struck, Christof ; Suaide, Alexandre Alarcon do Passo ; Sugarbaker, Evan R. ; Suire, Christophe Pierre ; Šumbera, Michal ; Symons, Timothy James MacNeil ; Toledo, Alejandro Szanto de ; Szarwas, Piotr ; Takahashi, Jun ; Tang, Aihong ; Thomas, James H. ; Tikhomirov, V. ; Trainor, Thomas A. ; Trentalange, Stephen ; Tokarev, Mikhail V. ; Tonjes, Marguerite Belt ; Trofimov, V. ; Tsai, Oleg D. ; Turner, K. ; Ullrich, Thomas ; Underwood, David G. ; Van Buren, Gene ; VanderMolen, A. M. ; Vanyashin, A. ; Vasilevski, I. M. ; Vasiliev, Alexander Nikolaevich ; Vigdor, Steven E. ; Voloshin, Sergei ; Wang, F. ; Ward, H. ; Watson, J. W. ; Wells, R. ; Wenaus, T. ; Westfall, Gary D. ; Whitten, Charles A. ; Wieman, Howard ; Willson, Robert ; Wissink, Scott W. ; Witt, Richard ; Xu, N. ; Xu, Z. ; Yakutin, A. E. ; Yamamoto, E. ; Yang, J. ; Yepes, Pablo P. ; Yokosawa, A. ; Yurevich, Vladimir Yurevich ; Zanevski, Y. V. ; Zborovský, Imrich ; Zhang, Haitao ; Zhang, W. M. ; Zoulkarneev, R. ; Zubarev, A. N.
The first measurements of light antinucleus production in Au+Au collisions at the Relativistic Heavy-Ion Collider are reported. The observed production rates for d-bar and 3He-bar are much larger than in lower energy nucleus-nucleus collisions. A coalescence model analysis of the yields indicates that there is little or no increase in the antinucleon freeze-out volume compared to collisions at CERN SPS energy. These analyses also indicate that the 3He-bar freeze-out volume is smaller than the d-bar freeze-out volume.