Dilepton production in pp and CC collisions with HADES

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

doi:10.1140/epja/i2006-10253-y

Dilepton production in pp and CC collisions with HADES

I Fröhlich, J Lamas-Valverde + Show 103 more

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https://doi.org/10.1140/epja/i2006-10253-y

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Journal: The European Physical Journal A	Publication Date: Mar 1, 2007
Citations: 7

Affiliation: Goethe University Frankfurt, University of Santiago de Compostela, Research Association for Combustion Engines, University of Giessen, Laboratori Nazionali del Sud, National Institute for Nuclear Physics, Helmholtz-Zentrum Dresden-Rossendorf, University of Coimbra, University of Catania, Technical University of Munich, Institut de Physique, Institut National de Physique Nucléaire et de Physique des Particules, French National Centre for Scientific Research, Czech Academy of Sciences, Nuclear Physics Institute, Institute for Nuclear Research, INFN Sezione di Milano, University of Milan, Jagiellonian University, Institute of Physics, University of Cyprus, Joint Institute for Nuclear Research, University of Valencia, Instituto de Física Corpuscular, TU Dresden, Instituto Superior de Educação e Ciências

#Pp Collisions #High Acceptance DiElectron Spectrometer + Show 8 more

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Abstract

e + e - production was studied using the High Acceptance DiElectron Spectrometer (HADES). In pp collisions at 2.2GeV kinetic beam energy, the exclusive η production and the Dalitz decay η→γe + e - have been reconstructed. The electromagnetic form factor of the latter decay was found to be in good agreement with the existing theoretical predictions. In addition, an inclusive e + e - invariant-mass spectrum from the 12C + 12C reaction at 2AGeV is presented and compared with a simplified thermal model.

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