/ Experiment-HEP arXiv:0804.3993

Dielectron Production in C-12 + C-12 Collisions at 1-GeV/u and the Solution to the DLS Puzzle

Published in: J.Phys.G
Year: 2008
Vol.: G35
Page No: 104159
Pages: 6

Abstract: The production of e+e- pairs in C+C collisions at 1 GeV/u was investigated with the HADES experiment at GSI, Darmstadt. In the invariant-mass region $0.15\: GeV/c^{2} \leq M_{ee} \leq 0.5\: GeV/c^{2}$ the measured pair yield shows a strong excess above the contribution expected from hadron decays after freeze-out. The data are in good agreement with the results of the former DLS experiment for the same system and energy.

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