https://doi.org/10.1140/epja/i2007-10453-y
Regular Article - Experimental Physics
Di-electrons from η -meson Dalitz decay in proton-proton collisions
1
Forschungszentrum Dresden-Rossendorf, PF 510119, 01314, Dresden, Germany
2
TU Dresden, Institut für Theoretische Physik, 01062, Dresden, Germany
Received:
9
February
2007
Accepted:
8
August
2007
Published online:
31
August
2007
The reaction 
is discussed within a covariant effective meson-nucleon theory. The model is adjusted to data of the subreaction 
. Our focus is on di-electrons from Dalitz decays of η -mesons, 
, and the role of the corresponding transition form factor 
. Numerical results are presented for the intermediate-energy kinematics of HADES experiments.
PACS: 13.60.Le Meson production – / 13.75.-n Hadron-induced low- and intermediate-energy reactions and scattering (energy ⩽ 10 GeV) – / 13.85.Lg Total cross sections – / 25.40.-h Nucleon-induced reactions –
© Società Italiana di Fisica and Springer-Verlag, 2007
