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Phi Meson Propagation and Decay at Finite Temperature

Kevin L. Haglin
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Abstract

We study spectral properties of the phi meson at finite temperature using an effective Lagrangian together with finite-temperature field theory as a basis for modeling. General field-theoretic arguments are then used to establish the lifetime of the phi in hot hadronic matter. We find from the model, and we therefore propose a scenario in which, the phi decays inside the fireball. Early decays into $μ^{+}μ^{-}$ occur at high temperature while measurable hadronic decays into $K^{+}K^{-}$ (not suffering rescattering) occur at freezeout, where flow could be substantial. These results provide a consistent picture, if not possible interpretation of the NA49 and NA50 data from CERN.

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Kevin L. Haglin. 2004-04-23. Phi Meson Propagation and Decay at Finite Temperature. https://doi.org/10.1556/aph.24.2005.1-4.39

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