Study of dielectron production in C_s16C collisions at 1-A-GeV
Keywords
nucleus nucleus: nuclear reaction, carbon, electron: pair production, dilepton: yield, dilepton: mass spectrum, energy dependence, meson: decay, magnetic spectrometer: experimental results, Darmstadt SIS, 1 GeV/nucleon Author supplied: Dilepton spectroscopy, Heavy-ion reactions, Excess yield, Excitation function, DLS puzzle
Abstract
The emission of e_s16e- pairs from C_s16C collisions at an incident energy of 1 GeV per nucleon has been investigated. The measured production probabilities, spanning from the pi0-Dalitz to the rho/omega! invariant-mass region, display a strong excess above the cocktail of standard hadronic sources. The bombarding-energy dependence of this excess is found to scale like pion production, rather than like eta production. The data are in good agreement with results obtained in the former DLS experiment.
