Skip to Main content Skip to Navigation
Journal articles

Measurement of charged pions in 12C + 12C collisions at 1 A GeV and 2 A GeV with HADES

G. Agakishiev C. Agodi A. Balanda G. Bellia D. Belver A. Belyaev J. Bielcik A. Blanco A. Bortolotti J. L. Boyard 1 P. Braun-Munzinger P. Cabanelas S. Chernenko T. Christ R. Coniglione M. Destefanis J. Diaz F. Dohrmann I. Durán A. Dybczak T. Eberl L. Fabbietti O. Fateev R. Ferreira-Marques P. Finocchiaro P. Fonte J. Friese I. Fröhlich T. Galatyuk J. A. Garzón R. Gernhäuser A. Gil C. Gilardi M. Golubeva D. González-Díaz E. Grosse F. Guber M. Heilmann T. Heinz T. Hennino 1 R. Holzmann A. Ierusalimov I. Iori A. Ivashkin M. Jurkovic B. Kämpfer K. Kanaki T. Karavicheva D. Kirschner I. Koenig W. Koenig B. W. Kolb R. Kotte A. Kozuch A. Krása F. Křížek R. Krücken W. Kühn A. Kugler A. Kurepin J. Lamas-Valverde S. Lang J. S. Lange K. Lapidus L. Lopes M. Lorenz L. Maier C. Maiolino A. Mangiarotti J. Marín J. Markert V. Metag B. Michalska J. Michel E. Morinière 1 J. Mousa M. Münch C. Müntz L. Naumann R. Novotny J. Otwinowski Y. C. Pachmayer M. Palka Y. Parpottas V. Pechenov O. Pechenova T. Pérez Cavalcanti P. Piattelli J. Pietraszko V. Pospíšil W. Przygoda B. Ramstein 1 A. Reshetin M. Roy-Stephan 1 A. Rustamov A. Sadovsky B. Sailer P. Salabura P. Sapienza A. Schmah C. Schroeder E. Schwab R. S. Simon Yu. G. Sobolev S. Spataro B. Spruck H. Ströbele J. Stroth C. Sturm M. Sudol 1 A. Tarantol K. Teilab P. Tlustý M. Traxler R. Trebacz H. Tsertos V. Wagner M. Weber M. Wisniowski T. Wojcik J. Wüstenfeld S. Yurevich Y. Zanevsky P. Zhou P. Zumbruch
1 IPNO - Institut de Physique Nucléaire d'Orsay
Abstract : 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 $ \pi^{{\pm}}_{}$ 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 $ \pi^{{\pm}}_{}$ 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.
Document type :
Journal articles
Complete list of metadata
http://hal.in2p3.fr/in2p3-00424376
Contributor : Sophie Heurteau <>
Submitted on : Thursday, October 15, 2009 - 2:09:43 PM
Last modification on : Wednesday, September 16, 2020 - 4:07:54 PM

Links full text

arxiv

Identifiers

Collections

IN2P3 | IPNO | CNRS

Citation

G. Agakishiev, C. Agodi, A. Balanda, G. Bellia, D. Belver, et al.. Measurement of charged pions in 12C + 12C collisions at 1 A GeV and 2 A GeV with HADES. European Physical Journal A, EDP Sciences, 2009, 40, pp.45-59. ⟨10.1140/epja/i2008-10746-7⟩. ⟨in2p3-00424376⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

154