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Mid-rapidity spectra and yields of K - and K + have been measured for Au+Au collisions at 4, 6, 8, and 10.7 AGeV. The K - yield increases faster with beam energy than for K + and hence the K - /K + ratio increases with beam energy. This ratio is studied as a function of both s and s-s th which allows the direct comparison of the kaon yields...
Positive pion and kaon production from Au+Au reactions have been measured as a function of beam energy over the range 2.0-10.7 AGeV. Both the kaon and the pion production cross-sections at mid-rapidity are observed to increase steadily with beam kinetic energy. The ratio of K + to π + mid-rapidity yields increases from 0.0271+/-0.0015+/-0.0014 at 2.0 AGeV to 0.202+/-0.005+/-0.010 at...
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