Mixing at High Temperature and Density

The temperature and density dependence of the ρ − ω mixing amplitude has been studied from a purely hadronic model. The in-medium baryon masses and chemical potentials have been obtained at the Mean Field (MF) Level and these results have been used to calculate the mixing amplitude. It has been observed that the mixing amplitude changes substantially at high temperature and density. Charge Symmetry Violation (CSV) is a very well established and interesting sphere of research. Though this field of research is quite old it is still quite challenging as the finer corrections from the experiments are still coming. The cross section for the process ee → ππ, in the ρ−ω resonance region, reveals an interference shoulder which results from the superposition of the narrow resonant ω and broad resonant ρ amplitudes [1]-[3]. Thus a G-parity violating process ω → ππ is observed. This observation motivates the study of ρ − ω mixing. Different authors have studied the ρ − ω mixing from different models and prescriptions [4]-[9]. In this article the temperature and density dependence of the mixing amplitude will be studied. The Email : [email protected]