Properties of the ϕ meson at high temperatures and densities

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Abstract

We calculate the spectral density of the ϕ meson in a hot bath of nucleons and pions using a general formalism relating self-energy to the forward scattering amplitude (FSA) [1,2]. In order to describe the low energy FSA, we use experimental data along with a background term. For the high energy FSA, a Regge parameterization is employed. We verify the resulting FSA using dispersion techniques. We find that the position of the peak of the spectral density is slightly shifted from its vacuum position and that its width is considerably increased. The width of the spectral density at a temperature of 150 MeV and at normal nuclear density is more than 90 MeV.

Keyword

Strangeness production 
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References

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    W-M Yao et al., J. Phys. G33 1 (2006)ADSGoogle Scholar

Copyright information

© Indian Association for the Cultivation of Science 2011

Authors and Affiliations

  1. 1.Department of PhysicsMcGill UniversityMontrealCanada
  2. 2.Insitut für Theoretische PhysikJ W Goethe University FrankfurtFrankfurt am MainGermany

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