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Dilepton production in pp and CC collisions with HADES

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The IVth International Conference on Quarks and Nuclear Physics

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Abstract

e + e − production was studied using the High Acceptance DiElectron Spectrometer (HADES). In pp collisions at 2.2 GeV 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 2 AGeV is presented and compared with a simplified thermal model.

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Author information

Authors and Affiliations

  1. Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, 95125, Catania, Italy

    C. Agodi, G. Bellia, P. Finocchiaro & S. Spataro

  2. Dipartimento di Fisica e Astronomia, Università di Catania, 95125, Catania, Italy

    G. Bellia

  3. LIP, Departamento de Física da Universidade de Coimbra, 3004-516, Coimbra, Portugal

    A. Blanco, P. J. R. Fonte, L. Lopes & A. Mangiarotti

  4. ISEC Coimbra, Portugal

    P. J. R. Fonte

  5. Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30059, Cracow, Poland

    A. Balanda, A. Kozuch, B. Michalska, J. Otwinowski, M. Palka, W. Przygoda, P. Salabura, R. Trebacz, M. Wisniowski & T. Wojcik

  6. Gesellschaft für Schwerionenforschung mbH, 64291, Darmstadt, Germany

    P. Braun-Munzinger, T. Galatyuk, D. González-Díaz, R. Holzmann, I. Koenig, W. Koenig, B. W. Kolb, S. Lang, S. Lange, J. Pietraszko, A. Rustamov, A. Schmah, R. Simon, J. Stroth, C. Sturm, M. Sudol, M. Traxler & P. Zumbruch

  7. Institut für Kern- und Hadronenphysik, Forschungszentrum Rossendorf, PF 510119, 01314, Dresden, Germany

    F. Dohrmann, E. Grosse, B. Kämpfer, K. Kanaki, R. Kotte, L. Naumann, A. Sadovsky & J. Wüstenfeld

  8. Technische Universität Dresden, 01062, Dresden, Germany

    E. Grosse

  9. Joint Institute of Nuclear Research, 141980, Dubna, Russia

    A. Belyaev, S. Chernenko, O. Fateev, A. Ierusalimov & Y. Zanevsky

  10. Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60486, Frankfurt, Germany

    I. Fröhlich, M. Heilmann, J. Markert, C. Müntz, Y. C. Pachmayer, H. Ströbele, J. Stroth, M. Sudol & K. Teilab

  11. II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392, Giessen, Germany

    G. Agakishiev, M. Destefanis, C. Gilardi, D. Kirschner, W. Kühn, V. Metag, D. Mishra, R. Novotny, V. Pechenov, O. Pechenova, T. Pérez Cavalcanti, B. Spruck & H. Wen

  12. Istituto Nazionale di Fisica Nucleare, Sezione di Milano, 20133, Milano, Italy

    I. Iori

  13. Dipartimento di Fisica, Università di Milano, 20133, Milano, Italy

    I. Iori

  14. Institute for Nuclear Research, Russian Academy of Science, 117312, Moscow, Russia

    M. Golubeva, F. Guber, A. Ivashkin, T. Karavicheva, A. Kurepin, A. Reshetin & I. Veretenkin

  15. Physik Department E12, Technische Universität München, 85748, Garching, Germany

    M. Böhmer, T. Christ, T. Eberl, L. Fabbietti, J. Friese, R. Gernhäuser, M. Jurkovic, R. Krücken & B. Sailer

  16. Department of Physics, University of Cyprus, 1678, Nicosia, Cyprus

    Ch. Hadjivasiliou, J. Mousa & H. Tsertos

  17. Institut de Physique Nucléaire d’Orsay, CNRS/IN2P3, 91406, Orsay Cedex, France

    J. L. Boyard, T. Hennino, E. Moriniere, B. Ramstein & M. Roy-Stephan

  18. Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068, Rez, Czech Republic

    F. Krizek, A. Kugler, P. Tlusty & V. Wagner

  19. Departamento de Física de Partículas, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain

    D. Belver, P. Cabanelas, E. Castro, J. A. Garzón, J. Lamas-Valverde & J. Marín

  20. Instituto de Física Corpuscular, Universidad de Valencia-CSIC, 46971, Valencia, Spain

    J. Díaz

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  1. I. Fröhlich
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Editor information

Editors and Affiliations

  1. Departamento de Física Teórica I, Universidad Complutense de Madrid, 28040, Madrid, Spain

    Antonio Dobado Gonzalez  & Felipe J. Llanes-Estrada  & 

  2. Departamento de Física Teórica, Universidad de Valencia, 46100, Burjassot (Valencia), Spain

    Vicente Vento

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Fröhlich, I. et al. (2007). Dilepton production in pp and CC collisions with HADES. In: Dobado Gonzalez, A., Llanes-Estrada, F.J., Vento, V. (eds) The IVth International Conference on Quarks and Nuclear Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-72516-9_116

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  • DOI: https://doi.org/10.1007/978-3-540-72516-9_116

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