Influence of the in-medium kaon potential on kaon production in heavy ion collisions

14th International Conference on Strangeness in Quark Matter

Srisawad, P.^1,4 ; Harfield, A.^1 ; Sombun, S.^1 ; Katukum, T.^1 ; Ketsungnoen, O.^1,4 ; Zheng, Y.M.^2 ; Limphirat, A.^3,4 ; Yan, Y.^3,4

Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand^1

China Institute of Atomic Energy, PO Box 275(18), 102413 Beijing, China^2

School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand^3

Thailand Center of Excellence in Physics (ThEP), CHE, Bangkok 10400, Thailand^4

关键词: Compression modulus;    Experiment data;    Heavy ion collision;    Incident energy;    Nuclear equation of state;    Polar angles;    Quantum molecular dynamics modeling;    Saturation density;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/509/1/012034/pdf
DOI  :  10.1088/1742-6596/509/1/012034

来源: IOP

【 摘 要 】

The inclusive cross section and polar angle distribution of K+mesons in Ni + Ni collisions at incident energy 1.93 AGeV are studied using the Quantum Molecular Dynamics model based on the covariant kaon dynamics, and compared with experimental KaoS data from GSI . The calculated K+yields better fit to experiment data for a soft nuclear equation of state (compression modulus K 200 MeV) when including the in-medium K+potential (its value at saturation density is Uk(ρ0) 30MeV). The calculated results for the polar angle distribution of K+in Ni + Ni collisions at 1.93 AGeV are slightly more forward and back direction than KaoS data.