Dielectron spectroscopy at 1-2 AGeV with HADES⋆

S. Spataro; G. Agakishiev; C. Agodi; A. Balanda; G. Bellia; D. Belver; A. Belyaev; A. Blanco; M. Böhmer; J. L. Boyard; P. Braun-Munzinger; P. Cabanelas; E. Castro; S. Chernenko; T. Christ; M. Destefanis; J. Díaz; F. Dohrmann; A. Dybczak; T. Eberl; L. Fabbietti; O. Fateev; 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. Hennino; 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. Krizek; R. Krücken; W. Kühn; A. Kugler; A. Kurepin; J. Lamas-Valverde; S. Lang; J. S. Lange; K. Lapidus; L. Lopes; M. Lorenz; L. Maier; A. Mangiarotti; J. Marín; J. Markert; V. Metag; J. Micel; B. Michalska; D. Mishra; E. Morinière; J. Mousa; C. Müntz; L. Naumann; R. Novotny; J. Otwinowski; Y. C. Pachmayer; M. Palka; Y. Parpottas; V. Pechenov; O. Pechenova; T. Pérez Cavalcanti; J. Pietraszko; W. Przygoda; B. Ramstein; A. Reshetin; M. Roy-Stephan; A. Rustamov; A. Sadovsky; B. Sailer; P. Salabura; A. Schmah; R. Simon; Yu. G. Sobolev; B. Spruck; H. Ströbele; J. Stroth; C. Sturm; M. Sudol; A. Tarantola; K. Teilab; P. Tlusty; M. Traxler; R. Trebacz; H. Tsertos; I. Veretenkin; V. Wagner; H. Wen; M. Wisniowski; T. Wojcik; J. Wüstenfeld; S. Yurevich; Y. Zanevsky; P. Zhou; P. Zumbruch

doi:10.1140/epja/i2008-10618-2

2022 Impact factor 2.7

Hadrons and Nuclei

Eur. Phys. J. A (2008) 38: 163-166
https://doi.org/10.1140/epja/i2008-10618-2

Regular Article - Experimental Physics

Dielectron spectroscopy at 1-2 AGeV with HADES^⋆

The HADES Collaboration
S. Spataro⁸^,1^*, G. Agakishiev⁸, C. Agodi¹, A. Balanda³, G. Bellia¹, D. Belver¹⁵, A. Belyaev⁶, A. Blanco², M. Böhmer¹¹, J. L. Boyard¹³, P. Braun-Munzinger⁴, P. Cabanelas¹⁵, E. Castro¹⁵, S. Chernenko⁶, T. Christ¹¹, M. Destefanis⁸, J. Díaz¹⁶, F. Dohrmann⁵, A. Dybczak³, T. Eberl¹¹, L. Fabbietti¹¹, O. Fateev⁶, P. Finocchiaro¹, P. Fonte², J. Friese¹¹, I. Fröhlich⁷, T. Galatyuk⁴, J. A. Garzón¹⁵, R. Gernhäuser¹¹, A. Gil¹⁶, C. Gilardi⁸, M. Golubeva¹⁰, D. González-Díaz⁴, E. Grosse⁵, F. Guber¹⁰, M. Heilmann⁷, T. Hennino¹³, R. Holzmann⁴, A. Ierusalimov⁶, I. Iori⁹, A. Ivashkin¹⁰, M. Jurkovic¹¹, B. Kämpfer⁵, K. Kanaki⁵, T. Karavicheva¹⁰, D. Kirschner⁸, I. Koenig⁴, W. Koenig⁴, B. W. Kolb⁴, R. Kotte⁵, A. Kozuch³, A. Krása¹⁴, F. Krizek¹⁴, R. Krücken¹¹, W. Kühn⁸, A. Kugler¹⁴, A. Kurepin¹⁰, J. Lamas-Valverde¹⁵, S. Lang⁴, J. S. Lange⁸, K. Lapidus¹⁰, L. Lopes², M. Lorenz⁷, L. Maier¹¹, A. Mangiarotti², J. Marín¹⁵, J. Markert⁷, V. Metag⁸, J. Micel⁷, B. Michalska³, D. Mishra⁸, E. Morinière¹³, J. Mousa¹², C. Müntz⁷, L. Naumann⁵, R. Novotny⁸, J. Otwinowski³, Y. C. Pachmayer⁷, M. Palka⁴, Y. Parpottas¹², V. Pechenov⁸, O. Pechenova⁸, T. Pérez Cavalcanti⁸, J. Pietraszko⁴, W. Przygoda³, B. Ramstein¹³, A. Reshetin¹⁰, M. Roy-Stephan¹³, A. Rustamov⁴, A. Sadovsky¹⁰, B. Sailer¹¹, P. Salabura³, A. Schmah⁴, R. Simon⁴, Yu. G. Sobolev¹⁴, B. Spruck⁸, H. Ströbele⁷, J. Stroth⁷^,4, C. Sturm⁷, M. Sudol⁴, A. Tarantola⁷, K. Teilab⁷, P. Tlusty¹⁴, M. Traxler⁴, R. Trebacz³, H. Tsertos¹², I. Veretenkin¹⁰, V. Wagner¹⁴, H. Wen⁸, M. Wisniowski³, T. Wojcik³, J. Wüstenfeld⁵, S. Yurevich⁴, Y. Zanevsky⁶, P. Zhou⁵ and P. Zumbruch⁴

¹ Laboratori Nazionali del Sud, Istituto Nazionale di Fisica Nucleare, Catania, Italy
² LIP-Laboratório de Instrumentação e Física Experimental de Partículas, Coimbra, Portugal
³ Smoluchowski Institute of Physics, Jagiellonian University of Cracow, Kraków, Poland
⁴ Gesellschaft für Schwerionenforschung mbH, Darmstadt, Germany
⁵ Institut für Strahlenphysik, Forschungszentrum Dresden-Rossendorf, Dresden, Germany
⁶ Joint Institute of Nuclear Research, Dubna, Russia
⁷ Institut für Kernphysik, Johann Wolfgang Goethe-Universität, Frankfurt, Germany
⁸ II.Physikalisches Institut, Justus Liebig Universität Giessen, Giessen, Germany
⁹ Sezione di Milano, Istituto Nazionale di Fisica Nucleare, Milano, Italy
¹⁰ Institute for Nuclear Research, Russian Academy of Science, Moscow, Russia
¹¹ Physik Department E12, Technische Universität München, München, Germany
¹² Department of Physics, University of Cyprus, Nicosia, Cyprus
¹³ Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3, Université Paris Sud, Orsay Cedex, France
¹⁴ Nuclear Physics Institute, Academy of Sciences of Czech Republic, Rez, Czech Republic
¹⁵ Departamento de Física de Partículas, University of Santiago de Compostela, Santiago de Compostela, Spain
¹⁶ Instituto de Física Corpuscular, Universidad de Valencia-CSIC, Valencia, Spain

^* e-mail: stefano.spataro@exp2.physik.uni-giessen.de

Received: 2 April 2008
Revised: 6 June 2008
Accepted: 30 June 2008
Published online: 14 July 2008

Abstract

The HADES spectrometer at GSI (Darmstadt) is investigating the e ⁺ e ^- pair production in p+p, p+A and A+A collisions. In this contribution we would like to highlight the physics motivations and the experiments performed so far, focusing mainly on the first results coming from ¹²C + ¹²C collisions at 1 and 2AGeV, and on preliminary results from p+p/d+p collisions at 1.25AGeV.