In-Medium Kaon Potential and Nuclear Equation of State Measured in Nucleus-Nucleus Collisions

作者：Srisawad P; Zheng Y M; Suksri A; Harfield A^*; Limphirat A; Yan Y

来源：Few-Body Systems, 2013, 54(7-10): 1449-1452.

DOI：10.1007/s00601-012-0534-8

The kaon production in heavy ion collisions at intermediate energies provides a sensitive probe to study the in-medium properties and nuclear equation of state of hadrons. Properties of kaons in dense hadronic matter are important for a better understanding of both, the possible restoration of chiral symmetry in dense hadronic matter and the properties of nuclear matter at high densities. We investigated the in-medium kaon potential and nuclear equation of state by transverse mass spectra of K (+) mesons in heavy ion collisions. We use quantum molecular dynamics (QMD) models based on covariant kaon dynamics to simulate collisions at 1.93 A GeV, to analyze the transverse mass spectra of K (+). Calculated results with a repulsive in-medium K N+ potential can reasonably describe the features of KaoS data. They also shown that the transverse mass spectrum of K (+) mesons is a sensitive observable to probe the kaon in-medium potential in dense nuclear matter.

• 出版日期2013-8
• 单位中国原子能科学研究院