Measurement of charged pions in 12C + 12C collisions at 1 A GeV and 2 A GeV with HADES
Date
2009Author
Krücken, R.Agakishiev, G.
Agodi, C.
Bałanda, A.
Bellia, G.
Belver, D.
Belyaev, A.
Bielčík, Jaroslav
Blanco, A.
Bortolotti, A.
Boyard, J. L.
Braun-Munzinger, P.
Cabanelas, Pablo
Chernenko, S.
Christ, T.
Coniglione, R.
Destefanis, M.
Diáz, J.
Dohrmann, F.
Durán, I.
Dybczak, A.
Eberl, T.
Fabbietti, L.
Fateev, O.
Ferreira-Marques, R.
Finocchiaro, P.
Fonte, P.
Friese, J.
Fröhlich, I.
Galatyuk, T.
Garzón, J. A.
Gernhäuser, R.
Gil, A.
Gilardi, C.
Golubeva, M.
González-Díaz, D.
Grosse, E.
Guber, F.
Heilmann, M.
Heinz, T.
Hennino, T.
Holzmann, R.
Ierusalimov, A.
Iori, I.
Ivashkin, A.
Jurkovic, M.
Kämpfer, B.
Kanaki, K.
Karavicheva, T.
Kirschner, D.
Koenig, I.
Koenig, W.
Kolb, B. W.
Kotte, R.
Kozuch, A.
Krása, Antonín
Křížek, F.
Kühn, W.
Kugler, A.
Kurepin, A.
Lamas-Valverde, J.
Lang, S.
Lange, J. S.
Lapidus, K.
Lopes, L.
Lorenz, M.
Maier, L.
Maiolino, C.
Mangiarotti, A.
Marín, J.
Markert, J.
Metag, V.
Michalska, B.
Michel, J.
Morinière, E.
Mousa, J.
Münch, M.
Müntz, C.
Naumann, L.
Novotny, R.
Otwinowski, J.
Pachmayer, Y. C.
Palka, M.
Parpottas, Yiannis
Pechenov, V.
Pechenova, O.
Pérez Cavalcanti, T.
Piattelli, P.
Pietraszko, J.
Pospíšil, V.
Przygoda, W.
Ramstein, B.
Reshetin, A.
Roy-Stephan, M.
Rustamov, A.
Sadovsky, A.
Sailer, B.
Salabura, P.
Sapienza, P.
Schmah, A.
Schroeder, C.
Schwab, E.
Simon, R. S.
Sobolev, Yu G.
Spataro, S.
Spruck, B.
Ströbele, H.
Stroth, J.
Sturm, C.
Sudol, M.
Tarantola, A.
Teilab, K.
Tlustý, P.
Traxler, M.
Trebacz, R.
![ORCID logo](https://orcid.org/sites/default/files/images/orcid_16x16.png)
Wagner, V.
Weber, M.
Wisniowski, M.
Wojcik, T.
Wüstenfeld, J.
Yurevich, S.
Zanevsky, Y.
Zhou, P.
Zumbruch, P.
ISSN
1434-6001Source
European Physical Journal AVolume
40Issue
1Pages
45-59Google Scholar check
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Show full item recordAbstract
We present the results of a study of charged-pion production in 12C + 12C collisions at incident beam energies of 1A GeV and 2A GeV using the HADES spectrometer at GSI. The main emphasis of the HADES program is on the dielectron signal from the early phase of the collision. Here, however, we discuss the data with respect to the emission of charged hadrons, specifically the production of π± mesons, which are related to neutral pions representing a dominant contribution to the dielectron yield. We have performed the first large-angular-range measurement of the distribution of π± mesons for the 12C + 12C collision system covering a fairly large rapidity interval. The pion yields, transverse-mass and angular distributions are compared with calculations done within a transport model, as well as with existing data from other experiments. The anisotropy of pion production is systematically analyzed. © 2009 SIF, Springer-Verlag Berlin Heidelberg.