Hadron production and propagation in pion-induced reactions on nuclei

R. Abou Yassine, J. Adamczewski-Musch, O. Arnold, E. T. Atomssa, M. Becker, C. Behnke, J. C. Berger-chen, A. Blanco, C. Blume, M. Böhmer, L. Chlad, P. Chudoba, I. Ciepał, S. Deb, C. Deveaux, D. Dittert, J. Dreyer, E. Epple, L. Fabbietti, P. Fonte, C. Franco, J. Friese, I. Fröhlich, J. Förtsch, T. Galatyuk, J. A. Garzón, R. Gernhäuser, R. Greifenhagen, M. Grunwald, M. Gumberidze, S. Harabasz, T. Heinz, T. Hennino, C. Höhne, F. Hojeij, R. Holzmann, M. Idzik, B. Kämpfer, K.-H. Kampert, B. Kardan, V. Kedych, I. Koenig, W. Koenig, M. Kohls, J. Kolas, B. W. Kolb, G. Korcyl, G. Kornakov, R. Kotte, W. Krueger, A. Kugler, T. Kunz, R. Lalik, K. Lapidus, S. Linev, F. Linz, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, A. Malige, J. Markert, S. Maurus, V. Metag, J. Michel, D. M. Mihaylov, V. Mikhaylov, A. Molenda, C. Müntz, R. Münzer, M. Nabroth, L. Naumann, K. Nowakowski, J. Orliński, J. -H. Otto, Y. Parpottas, M. Parschau, C. Pauly, V. Pechenov, O. Pechenova, K. Piasecki, J. Pietraszko, T. Povar, K. Prościński, A. Prozorov, W. Przygoda, K. Pysz, B. Ramstein, N. Rathod, P. Rodriguez-Ramos, A. Rost, A. Rustamov, P. Salabura, T. Scheib, N. Schild, K. Schmidt-Sommerfeld, H. Schuldes, E. Schwab, F. Scozzi, F. Seck, P. Sellheim, J. Siebenson, L. Silva, U. Singh, J. Smyrski, S. Spataro, S. Spies, M. Stefaniak, H. Ströbele, J. Stroth, C. Sturm, K. Sumara, O. Svoboda, M. Szala, P. Tlusty, M. Traxler, H. Tsertos, I. C. Udrea, O. Vazquez-Doce, V. Wagner, A. A. Weber, C. Wendisch, M. G. Wiebusch, J. Wirth, A. Władyszewska, H. P. Zbroszczyk, E. Zherebtsova, M. Zielinski, P. Zumbruch, C. Curceanu, K. Piscicchia, A. Scordo

The European Physical Journal A（2024）

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Abstract

Hadron production ( π ^± , proton, Λ , K_S^0 , K^± ) in π ^- + C and π ^- + W collisions is investigated at an incident pion beam momentum of 1.7 GeV/c . This comprehensive set of data measured with HADES at SIS18/GSI significantly extends the existing world data on hadron production in pion induced reactions and provides a new reference for models that are commonly used for the interpretation of heavy-ion collisions. The measured inclusive differential production cross-sections are compared with state-of-the-art transport model (GiBUU, SMASH) calculations. The (semi-) exclusive channel π ^- + A →Λ + K_S^0 +X , in which the kinematics of the strange hadrons are correlated, is also investigated and compared to a model calculation. Agreement and remaining tensions between data and the current version of the considered transport models are discussed.

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