An attempt to incorporate separate chemical and thermal freeze outs in hydrodynamics
N. Arbex, F. Grassi, Y. Hama, O. Socolowski
Abstract
From an analysis of various types of data obtained in relativistic nuclear collisions, the following picture has emerged in thermal and hydrodynamical descriptions: as the fluid expands and cools, particles first undergo a chemical freeze out at Tch.~160-200 MeV then a thermal freeze out at Tth~100-140 MeV. In this paper we show how to incorporate these separate freeze outs consistently in a hydrodynamical code via a modified equation of state (general case) or via a modified Cooper-Frye formula (particular case of Tch. close to Tth. or few particle species undergoing early chemical freeze-out). The modified equation of state causes faster cooling and may have sizable impact on the predicted values of observables.
Create a lesson
Related papers
Impact of ab initio E1 strength on neutron capture rates along the nickel isotopic chain
Francesca Bonaiti, Joanna E. Sobczyk
Final-state centrality in relativistic heavy-ion simulations from neural networks
Anibal Bezerra, Fernando G. Gardim
Constrained coupled-cluster computations yield negative-parity rotational bands
Gaute Hagen, Benjamin Bally, Thomas Papenbrock
Levy-shaped femtoscopic sources from an exact solution of relativistic hydrodynamics
Bence Szentkuti, Mate Csanad
Octupole correlations in the excited 0+ states and two-neutron transfers in actinide nuclei
Kosuke Nomura
Macroscopic study of ϕ-mesic nuclei in pp collisions at s = 7 TeV with the PACIAE model
Qiang Wang, Zhi-Lei She, An-Ke Lei et al.