The effect of Lorentz-like force on collective flows of K+ in Au+Au collisions at 1.5 GeV/nucleon

Article

Abstract

Producing kaon mesons in heavy-ion collisions at beam energies below their threshold energy is an important way to investigate the properties of dense nuclear matter. In this study, based on the newly updated version of the ultrarelativistic quantum molecular dynamics model, we introduce the kaon-nucleon (KN) potential, including both the scalar and vector (also dubbed Lorentz-like) aspects. We revisit the influence of the KN potential on the collective flow of K+ mesons produced in Au+Au collisions at Elab = 1.5 GeV/nucleon and find that the contribution of the newly included Lorentz-like force is very important, particulary for describing the directed flow of K+. Finally, the corresponding KaoS data of both directed and elliptic flows can be simultaneously reproduced well.

Keywords

kaon flow heavy-ion collision transport model kaon-nucleon potentia 

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of ScienceHuzhou UniversityHuzhouChina
  2. 2.School of Physics science and TechnologyShenyang Normal UniversityShenyangChina
  3. 3.Institute of Modern PhysicsChinese Academy of SciencesLanzhouChina

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