1. Hyperon dynamics and production of multi-strangeness hypernuclei in heavy-ion collisions at 3A GeV
- Author
-
Hui-Gan Cheng and Zhao-Qing Feng
- Subjects
Nuclear and High Energy Physics ,Hyperon dynamics ,Nuclear Theory ,Double lambda hypernuclei ,Physics ,QC1-999 ,High Energy Physics::Phenomenology ,FOS: Physical sciences ,Nuclear Theory (nucl-th) ,Energy spectra ,Relativistic heavy-ion collisions ,Nuclear Experiment ,LQMD transport model - Abstract
Within the microscopic transport, systematic investigation of the many facets of hyperons and hypernuclei up to strangeness $S = -2$ are carried out for $^{197}$Au + $^{197}$Au and $^{40}$Ca + $^{40}$Ca at the incident energy of $3A$ GeV. The spatial, temporal and density distributions of hyperon production, absorption and freeze-out are thoroughly investigated. The rapidity and kinetic energy spectra of $\Xi$ hyperons and double $\Lambda$ hypernuclei are analyzed. It is revealed that the chemical balance of hyperon production is established in baryon-baryon channels while the opposite is found in baryon-meson channels. It turns out that the rapidity spectra of $^{4,5}_{\Lambda\Lambda}$X are single-peak and more than two orders of magnitude lower than that of $^{3}_{\Lambda}$H. Formation of double $\Lambda$ hypernuclei through $\Xi$ hypernuclei as intermediate states is also discussed in kinematics., Comment: 10 pages, 5 figures
- Published
- 2022