Year: 2019
Type: article
Abstract: We investigate identical pion HBT intensity interferometry in central Au + Au collisions at 1.23 A GeV. High-statistics π − π − and π + π + data are measured with HADES at SIS18/GSI. The radius parameters, derived from the correlation function depending on relative momenta in the longitudinally comoving system and parametrized as three-dimensional Gaussian distribution, are studied as function of transverse momentum. A substantial charge-sign difference of the source radii is found, particularly pronounced at low transverse momentum. The extracted source parameters agree well with a smooth extrapolation of the center-of-mass energy dependence established at higher energies, extending the corresponding excitation functions down towards a very low energy.
Source: Physics Letters B
Authors: J. Adamczewski-Musch, O. Arnold, C. Behnke, A. Belounnas, A. Belyaev, J.C. Berger-Chen, J. Biernat, A. Blanco, C. Blume, M. Böhmer, P. Bordalo, S. Chernenko, L. Chlad, C. Deveaux, J. Dreyer, A. Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Filip, P. Fonte, C. Franco, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, M. Golubeva, R. Greifenhagen, F. Guber, M. Gumberidze, S. Harabasz, T. Heinz, T. Hennino, S. Hlavac, C. Höhne, R. Holzmann, A. Ierusalimov, A. Ivashkin, B. Kämpfer, T. Karavicheva, B. Kardan, I. Koenig, W. Koenig, B.W. Kolb, G. Korcyl, G. Kornakov, R. Kotte, A. Kugler, T. Kunz, A. Kurepin, A. Kurilkin, P. Kurilkin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, A. Mangiarotti, J. Markert, T. Matulewicz, S. Maurus, V. Metag, J. Michel, D.M. Mihaylov, S. Morozov, C. Müntz, R. Münzer, L. Naumann, K. Nowakowski, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, O. Petukhov, K. Piasecki, J. Pietraszko, W. Przygoda, S. Ramos, B. Ramstein, A. Reshetin, P. Rodriguez-Ramos, P. Rosier, A. Rost, A. Sadovsky, P. Salabura, T. Scheib, H. Schuldes, E. Schwab, F. Scozzi, F. Seck, P. Sellheim, I. Selyuzhenkov, J. Siebenson, L. Silva, Yu.G. Sobolev, S. Spataro, S. Spies, H. Ströbele, J. Stroth, P. Strzempek, C. Sturm, O. Svoboda, M. Szala, P. Tlusty, M. Traxler, H. Tsertos, E. Usenko, V. Wagner, C. Wendisch, M.G. Wiebusch, J. Wirth, D. Wójcik, Y. Zanevsky, P. Zumbruch
Institutions: GSI Helmholtz Centre for Heavy Ion Research, Excellence Cluster Universe, Technical University of Munich, Goethe University Frankfurt, Université Paris-Sud, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut National de Physique Nucléaire et de Physique des Particules, Joint Institute for Nuclear Research, Jagiellonian University, LIP - Laboratory of Instrumentation and Experimental Particle Physics, Czech Academy of Sciences, Czech Academy of Sciences, Nuclear Physics Institute, Justus-Liebig-Universität Gießen, Helmholtz-Zentrum Dresden-Rossendorf, Slovak Academy of Sciences, Institute of Physics of the Slovak Academy of Sciences, Technische Universität Darmstadt, Universidade de Santiago de Compostela, Institute for Nuclear Research, Technische Universität Dresden, ExtreMe Matter Institute EMMI, Institut de Physique, Institute for Theoretical and Experimental Physics, University of Warsaw, National Research Nuclear University MEPhI, University of Cyprus, Frederick University, University of Turin
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Funders: Deutsche Forschungsgemeinschaft, Bundesministerium für Bildung und Forschung, Centre National de la Recherche Scientifique, Technische Universität Darmstadt, Emberi Eroforrások Minisztériuma, National Research Nuclear University MEPhI, GSI Helmholtzzentrum für Schwerionenforschung, Institut National de Physique Nucléaire et de Physique des Particules, ExtreMe Matter Institute, GSI Helmholtzzentrum für Schwerionenforschung
Awards: G196419191, G3712213300, G4090823411, G4309632961, GSI-HADES: Mitarbeit am HADES Experiment (GSI) - Analyse, Elektronikentwicklung und Beteiligung am Bau des EMC, G5533127348, G6649312515, Verbundprojekt 05P2015 - CBM R&D: Kaon- und Antikaon-Produktion in pion-induzierten Reaktionen bei HADES, G7309222231, G7935063964, G8214041829, G8304187994
OpenAlex ID: W2900705291