Eta production in heavy-ion collisions and the DLS di-electron enhancement

The Dalitz-decay contribution of neutral mesons to the di-electron invarian t-mass spectrum at 1 AGeV is deduced from a systematics of meson production cross sections measured with the photon spectrometer TAPS. A comparison wi th recently published di-electron mass spectra of the DLS collaboration sho ws that eta Dalitz decay does not exhaust the e(+)e(-) yield in the mass ra nge of 0.2-0.5 GeV/c(2).