phi puzzle in heavy-ion collisions at 2 AGeV: how many K-from phi decays?
Abstract
The preliminary experimental data on φ production in the reaction Ni(1.93 AGeV) + Ni point to a puzzling high φ yield which can not be reproduced with present transport codes. We survey the experimental situation and present prospects for dedicated measurements of the φ multiplicities with the K+ K- and e+ e- channels at HADES and FOPI.
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