Kaon Dynamics in Heavy-ion Collisions at Intermediate Energies

FENG Zhaoqing

doi:10.11804/NuclPhysRev.31.03.326

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FENG Zhaoqing. Kaon Dynamics in Heavy-ion Collisions at Intermediate Energies[J]. Nuclear Physics Review, 2014, 31(3): 326-332. doi: 10.11804/NuclPhysRev.31.03.326

Citation:

FENG Zhaoqing. Kaon Dynamics in Heavy-ion Collisions at Intermediate Energies[J]. Nuclear Physics Review, 2014, 31(3): 326-332. doi: 10.11804/NuclPhysRev.31.03.326

Kaon Dynamics in Heavy-ion Collisions at Intermediate Energies

doi: 10.11804/NuclPhysRev.31.03.326

FENG Zhaoqing

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2014-09-20

Abstract

Dynamics of kaons (K0 and K+) produced in nuclear reactions near threshold energies has been investigated within the Lanzhou quantum molecular dynamics (LQMD) transport model.The production yields are consistent with the available experimental data. A repulsive kaon-nucleon potential is implemented in the model through fitting the kinetic energy spectra of inclusive cross sections in heavy-ion collisions, which enhances the energetic kaon emission squeezed out in the reaction zone and reduces the total kaon yields. The comparison to the available data supports a soft equation of state in the density region of 2 ~3ρ₀ for isospin symmetric nuclear matter. It is found that the stiffness of nuclear symmetry energy plays a significant role on the isospin ratio with decreasing the incident energy, in particularly in the domain of subthreshold energies.
- LQMD model,
- kaon-nucleon potential,
- symmetry energy,
- K0/K+ ratio
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沈阳化工大学材料科学与工程学院沈阳 110142

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Kaon Dynamics in Heavy-ion Collisions at Intermediate Energies

doi: 10.11804/NuclPhysRev.31.03.326

FENG Zhaoqing

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2014-09-20

Key words:

Abstract: Dynamics of kaons (K0 and K+) produced in nuclear reactions near threshold energies has been investigated within the Lanzhou quantum molecular dynamics (LQMD) transport model.The production yields are consistent with the available experimental data. A repulsive kaon-nucleon potential is implemented in the model through fitting the kinetic energy spectra of inclusive cross sections in heavy-ion collisions, which enhances the energetic kaon emission squeezed out in the reaction zone and reduces the total kaon yields. The comparison to the available data supports a soft equation of state in the density region of 2 ~3ρ₀ for isospin symmetric nuclear matter. It is found that the stiffness of nuclear symmetry energy plays a significant role on the isospin ratio with decreasing the incident energy, in particularly in the domain of subthreshold energies.

FENG Zhaoqing. Kaon Dynamics in Heavy-ion Collisions at Intermediate Energies[J]. Nuclear Physics Review, 2014, 31(3): 326-332. doi: 10.11804/NuclPhysRev.31.03.326

Citation:

FENG Zhaoqing. Kaon Dynamics in Heavy-ion Collisions at Intermediate Energies[J]. Nuclear Physics Review, 2014, 31(3): 326-332. doi: 10.11804/NuclPhysRev.31.03.326