Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2011-05-26
Physics
Nuclear Physics
Nuclear Theory
Scientific paper
In is paper we compare two models with central Au-Au collisions at $\sqrt{s_{NN}}$=200 GeV. The first model is a minijet model which assumes that around $\sim$50 minijets are produced in back-to-back pairs and have an altered fragmentation functions. It is also assumed that the fragments are transparent and escape the collision zone and are detected. The second model is a glasma flux tube model which leads to flux tubes on the surface of a radial expanding fireball driven by interacting flux tubes near the center of the fireball through plasma instabilities. This internal fireball becomes an opaque hydro fluid which pushes the surface flux tubes outward. Around $\sim$12 surface flux tubes remain and fragment with $\sim$1/2 the produced particles escaping the collision zone and are detected. Both models can reproduce two particle angular correlations in the different $p_{t1}$ $p_{t2}$ bins. We also compare the two models for three additional effects: meson baryon ratios; the long range nearside correlation called the ridge; and the so-called mach cone effect when applied to three particle angular correlations.
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