First observation of phi-meson directed flow v1 comparable in magnitude to protons and Lambdas but much larger than K0S, with baryon-like energy dependence at high baryon density.
Antiflow of Nucleons at the Softest Point of the EoS
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abstract
We investigate flow in semi-peripheral nuclear collisions at AGS and SPS energies within macroscopic as well as microscopic transport models. The hot and dense zone assumes the shape of an ellipsoid which is tilted by an angle Theta with respect to the beam axis. If matter is close to the softest point of the equation of state, this ellipsoid expands predominantly orthogonal to the direction given by Theta. This antiflow component is responsible for the previously predicted reduction of the directed transverse momentum around the softest point of the equation of state.
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A hybrid freeze-out model combining transport dynamics and thermal cluster production is proposed for light nuclei in intermediate-energy heavy-ion collisions.
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Observation of Strong $\phi$-meson Directed Flow at High Baryon Density
First observation of phi-meson directed flow v1 comparable in magnitude to protons and Lambdas but much larger than K0S, with baryon-like energy dependence at high baryon density.
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Freeze-out model of light nuclei formation in heavy-ion collision transport
A hybrid freeze-out model combining transport dynamics and thermal cluster production is proposed for light nuclei in intermediate-energy heavy-ion collisions.