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Medium effects in proton-induced K⁰ production at 3.5 GeV

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arxiv 1404.7011 v2 pith:HWKKJOWL submitted 2014-04-28 nucl-ex

Medium effects in proton-induced K⁰ production at 3.5 GeV

classification nucl-ex
keywords kaoncollisionsdatamodelpotentialproductionchptexperimental
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present the analysis of the inclusive $K^{0}$ production in p+p and p+Nb collisions measured with the HADES detector at a beam kinetic energy of 3.5 GeV. Data are compared to the GiBUU transport model. The data suggest the presence of a repulsive momentum-dependent kaon potential as predicted by the Chiral Perturbation Theory (ChPT). For the kaon at rest and at normal nuclear density, the ChPT potential amounts to $\approx 35$ MeV. A detailed tuning of the kaon production cross sections implemented in the model has been carried out to reproduce the experimental data measured in p+p collisions. The uncertainties in the parameters of the model were examined with respect to the sensitivity of the experimental results from p+Nb collisions to the in-medium kaon potential.

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