Dielectron spectroscopy at 1-2 AGeV with HADES⋆

S Spataro,M Destefanis,F Dohrmann,B Ramstein,I Veretenkin,T Christ,J Micel,A Mangiarotti,V Pechenov,J Pietraszko,A Blanco,C Agodi,P Cabanelas,V Wagner,P Zumbruch,L Maier,D Belver,M Traxler,L Lopes,D González-Díaz,A Sadovsky,L Naumann,R Holzmann,A Ivashkin,V Metag,T Galatyuk,W Kühn,D Kirschner,E Morinière,C Gilardi,E Castro,J Lamas-Valverde,I Fröhlich,P Fonte,Yu G Sobolev,J L Boyard,K Teilab,J Wüstenfeld,H Ströbele,A Tarantola,A Rustamov,J A Garzón,M Böhmer,P Salabura,I Iori,A Dybczak,B Sailer,B Michalska,T Hennino,H Tsertos,B Spruck,C Müntz,J S Lange,S Yurevich,G Agakishiev,J Friese,J Markert,B W Kolb,G Bellia,O Pechenova,A Krása,Y Parpottas,R Krücken,M Lorenz ,A Belyaev ,W Przygoda ,E Grosse ,S Chernenko ,A Ierusalimov ,J Mousa ,I Köenig ,B Kämpfer ,S Lang ,M Pałka ,A Kurepin ,J C Marin ,T Pérez Cavalcanti ,Manuel Heilmann ,Christian Sturm ,R Gernhäuser ,A Gil ,A Bałanda ,L Fabbietti ,K Lapidus ,T Eberl ,M Jurkovič ,Julio Pérez Díaz ,Hao Wen ,T Karavicheva ,P Braun‐Munzinger ,M Golubeva ,J Otwinowski ,A Kożuch ,P Finocchiaro ,F Křížek ,R Kötte ,K Kanaki ,F Guber ,D Mishra ,M Wiśniowski ,Pei Zhou ,R Trębacz ,А Куглер ,R S Simon ,Y Zanevsky ,P Tlustý ,A Reshetin ,J Stroth ,M Sudoł ,W Koenig ,O Fateev ,M Roy‐Stéphan ,Tomasz Wójcik ,Y Pachmayer ,A Schmah ,R Novotny

doi:10.1140/epja/i2008-10618-2

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.

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