Double strangeness Ξ− production as a probe of nuclear equation of state at high densities
Double strangeness Ξ− production in Au+Au collisions at 2, 4, and 6 GeV/nucleon incident beam energies is studied with the pure hadron cascade version of a multi-phase transport model. It is found that due to larger nuclear compression, the model with the soft equation of state (EoS) gives larger yi...
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2021-09-01
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doaj-d78808ab39a14121821ccd20a28b36872021-10-09T04:35:56ZengElsevierPhysics Letters B0370-26932021-09-01820136521Double strangeness Ξ− production as a probe of nuclear equation of state at high densitiesGao-Chan Yong0Zhi-Gang Xiao1Yuan Gao2Zi-Wei Lin3Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China; Corresponding author.Department of Physics, Tsinghua University, Beijing 100084, ChinaSchool of Information Engineering, Hangzhou Dianzi University, Hangzhou 310018, ChinaDepartment of Physics, East Carolina University, Greenville, NC 27858, USADouble strangeness Ξ− production in Au+Au collisions at 2, 4, and 6 GeV/nucleon incident beam energies is studied with the pure hadron cascade version of a multi-phase transport model. It is found that due to larger nuclear compression, the model with the soft equation of state (EoS) gives larger yields of both single strangeness (K+ and Λ+Σ0) and double strangeness Ξ−. The sensitivity of the double strangeness Ξ− to the EoS is evidently larger than that of K+ or Λ+Σ0 since the phase-space distribution of produced Ξ− is more compact compared to those of the single strangeness. The larger sensitivity of the yields ratio of Ξ− to the EoS from heavy and light systems is kept compared to that of the single strangeness. The study of Ξ− production in relativistic heavy-ion collisions provides an alternative for the ongoing heavy-ion collision program at facilities worldwide for identifying the EoS at high densities, which is relevant to the investigation of the phase boundary and onset of deconfinement of dense nuclear matter.http://www.sciencedirect.com/science/article/pii/S0370269321004615 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Gao-Chan Yong Zhi-Gang Xiao Yuan Gao Zi-Wei Lin |
spellingShingle |
Gao-Chan Yong Zhi-Gang Xiao Yuan Gao Zi-Wei Lin Double strangeness Ξ− production as a probe of nuclear equation of state at high densities Physics Letters B |
author_facet |
Gao-Chan Yong Zhi-Gang Xiao Yuan Gao Zi-Wei Lin |
author_sort |
Gao-Chan Yong |
title |
Double strangeness Ξ− production as a probe of nuclear equation of state at high densities |
title_short |
Double strangeness Ξ− production as a probe of nuclear equation of state at high densities |
title_full |
Double strangeness Ξ− production as a probe of nuclear equation of state at high densities |
title_fullStr |
Double strangeness Ξ− production as a probe of nuclear equation of state at high densities |
title_full_unstemmed |
Double strangeness Ξ− production as a probe of nuclear equation of state at high densities |
title_sort |
double strangeness ξ− production as a probe of nuclear equation of state at high densities |
publisher |
Elsevier |
series |
Physics Letters B |
issn |
0370-2693 |
publishDate |
2021-09-01 |
description |
Double strangeness Ξ− production in Au+Au collisions at 2, 4, and 6 GeV/nucleon incident beam energies is studied with the pure hadron cascade version of a multi-phase transport model. It is found that due to larger nuclear compression, the model with the soft equation of state (EoS) gives larger yields of both single strangeness (K+ and Λ+Σ0) and double strangeness Ξ−. The sensitivity of the double strangeness Ξ− to the EoS is evidently larger than that of K+ or Λ+Σ0 since the phase-space distribution of produced Ξ− is more compact compared to those of the single strangeness. The larger sensitivity of the yields ratio of Ξ− to the EoS from heavy and light systems is kept compared to that of the single strangeness. The study of Ξ− production in relativistic heavy-ion collisions provides an alternative for the ongoing heavy-ion collision program at facilities worldwide for identifying the EoS at high densities, which is relevant to the investigation of the phase boundary and onset of deconfinement of dense nuclear matter. |
url |
http://www.sciencedirect.com/science/article/pii/S0370269321004615 |
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