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Excitation Function of K$^+$ and $π^+$ Production in Au+Au Reactions at 2-10 AGeV

L. Ahle
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Abstract

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$\pm0.0015\pm0.0014$ at 2.0~AGeV to 0.202$\pm0.005\pm0.010$ at 10.7~AGeV and is larger than the K$^+$/$π^+$ ratio from p+p reactions over the same beam energy region. There is no indication of an onset of any new production mechanism in heavy-ion reactions in this energy range beyond rescattering of hadrons.

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L. Ahle. 1999-10-08. Excitation Function of K$^+$ and $π^+$ Production in Au+Au Reactions at 2-10 AGeV. https://doi.org/10.1016/s0370-2693(00)00037-x

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