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Medium modifications of kaons in pion matter
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abstract
Kaon in-medium masses and mean-field potentials are calculated in isotopically symmetric pion matter to one loop of chiral perturbation theory. The results are extended to RHIC temperatures using experimental data on $\pi K$ scattering phase shifts. The kaon in-medium broadening results in an acceleration of the $\phi \to K\bar{K}$ decay. The increased apparent dilepton branching of the $\phi $-mesons, observed recently by NA50, NA49, and the PHENIX collaborations at RHIC, is interpreted in terms of rescattering of secondary kaons inside of the pion matter.
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Cited by 1 Pith paper
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Kaon Modification in Pion Medium
The pion medium enhances baryon-induced kaon modification by at most 5 percent at freeze-out, calculated from a chiral nucleon-kaon-pion Lagrangian.
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