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Guber, F. Scozzi, F. Seck, G. Korcyl, G. Kornakov, HADES collaboration: J. Adamczewski-Musch, H. Schuldes, H. Str\\\"obele, H. Tsertos, I. Fr\\\"ohlich, I. Koenig, I. Selyuzhenkov, J.A. Garzon, J. Biernat, J.C. Berger-Chen, J. Dreyer, J. Friese, J. Markert, J. Michel, J. Pietraszko, J. Siebenson, J. Stroth, J. Wirth, K. Lapidus, K.N. Nowakowski, L. Chlad, L. Fabbietti, L. Lopes, L. Maier, L. Naumann, L. Silva, M. B\\\"ohmer, M. Golubeva, M. Gumberidze, M.G. Wiebusch, M. Lorenz, M. Palka, M. Szala, M. Traxler, O. Arnold, O. Fateev, O. Pechenova, O. Petukhov, O. Svoboda, P. Bordalo, P. Filip, P. Fonte, P. Kurilkin, P. Rodriguez-Ramos, P. Rosier, P. Salabura, P. Sellheim, P. Strzempek, P. Tlusty, P. Zumbruch, R. Gernh\\\"auser, R. Greifenhagen, R. Holzmann, R. Kotte, R. Lalik, R. M\\\"unzer, S. Chernenko, S. Harabasz, S. Hlavac, S. Maurus, S. Morozov, S. Ramos, S. Spataro, T. Galatyuk, T. Heinz, T. Hennino, T. Karavicheva, T. Kunz, T. Mahmoud, T. Scheib, V. Ladygin, V. Metag, V. 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