Kaon production in the HADES experiment in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=2.4$ GeV

Abstract

Within an isospin- and momentum-dependent transport model by including the kaon reaction channels, we study the kaon prodution in heavy-ion collisions (HICs) at SIS (Darmstadt Schwerionen Synchrotron, GSI) energies. Based on simulations of a centrality of 0-40% Au + Au collision at $\sqrt{s_{NN}}=2.4$ GeV, a typical reaction that has been carried out by the HADES Collaboration, we confirm that the medium modification of kaon masses plays a vital role in studying the kaon productions in HICs, and is also unavoidable for the successful interpretation of the HADES data on kaon rapidity distributions and transverse mass spectra. Moreover, it is shown that the directed flows of kaons are affected significantly by the kaon potential and slightly affected by the medium modification of kaon masses. Also, the rapidity-dependent inverse slope parameter $T_B$ of the kaon transverse mass spectra is shown to be affected considerably by both the kaon potential and medium modification of kaon masses. However, through checking the simulations of related reactions in FOPI and/or KaoS experiments, some of these regular effects do not seem to be obvious and appear to be the reaction system and/or beam energy dependent. Nevertheless, it can be confirmed that the medium modification of kaon masses is favored by observations from the inverse slope parameter $T_B$ and transverse mass spectra of kaons in both HADES Au + Au collisions at $\sqrt{s_{NN}}=2.4$ GeV and FOPI Ni + Ni collisions at 1.93\textit{A} GeV. Therefore, measurements of the inverse slope parameter $T_B$ of kaon transverse mass spectra and the kaon directed flows in HADES Au + Au collisions would be great benefit to detection of the kaon potential and the corresponding medium effects on kaon masses.

arXiv comment12 pages, 9 figures, more results and figures are included. Accepted for publication in Physical Review C

References in corpus (55)

• A Multi-Phase Transport Model for Relativistic Heavy Ion Collisions
• Equations of state for supernovae and compact stars
• The Equation of State of Hot, Dense Matter and Neutron Stars
• Implications of PREX-II on the equation of state of neutron-rich matter
• Formation of superdense hadronic matter in high energy heavy-ion collisions
• Evidence for a Soft Nuclear Equation-of-State from Kaon Production in Heavy Ion Collisions
• The Nuclear Symmetry Energy
• A way forward in the study of the symmetry energy: experiment, theory, and observation
• Probing the nuclear equation of state by $K^{+}$ production in heavy ion collisions
• From Kaon-Nuclear Interactions to Kaon Condensation
• Kaons in dense matter, kaon production in heavy-ion collisions, and kaon condensation in neutron stars
• Nuclear forces and their impact on neutron-rich nuclei and neutron-rich matter
• Strangeness Production close to Threshold in Proton-Nucleus and Heavy-Ion Collisions
• Effects of momentum-dependent symmetry potential on heavy-ion collisions induced by neutron-rich nuclei
• Astrophysical Constraints on the Symmetry Energy and the Neutron Skin of ${}^{208}$Pb with Minimal Modeling Assumptions
• Hadronic Matter is Soft
• Kaon production in heavy-ion collisions and maximum mass of neutron stars
• Rotational properties of hypermassive neutron stars from binary mergers
• Probing the Symmetry Energy with the Spectral Pion Ratio
• Kaon versus Antikaon Production at SIS Energies
• Momentum dependence of the symmetry potential and nuclear reactions induced by neutron-rich nuclei at RIA
• Hyperon production in Ar+KCl collisions at 1.76A GeV
• Phi decay: a relevant source for K- production at SIS energies?
• Kaon flow as a probe of the kaon potential in nuclear medium
• Meson-nucleus potentials and the search for meson-nucleus bound states
• In-Medium Effects on K0 Mesons in Relativistic Heavy-Ion Collisions
• Production of K+ and of K- Mesons in Heavy-Ion Collisions from 0.6 to 2.0 AGeV Incident Energy
• Directed, elliptic and higher order flow harmonics of protons, deuterons and tritons in Au+Au collisions at $\sqrt{s_{NN}}=2.4$ GeV
• Sideward flow of K+ mesons in Ru+Ru and Ni+Ni reactions near threshold
• Enhanced Out-of-plane Emission of K+ Mesons observed in Au+Au Collisions at 1 AGeV
• K^+ production in the reaction ${}^{58}Ni{+}^{58}Ni$ at incident energies from 1 to 2 AGeV
• Feasability of constraining the curvature parameter of the symmetry energy using elliptic flow data
• Thermal properties of asymmetric nuclear matter with an improved isospin- and momentum-dependent interaction
• In-medium effects in strangeness production in heavy-ion collisions at (sub-)threshold energies
• Deep sub-threshold ϕ production and implications for the K+/K- freeze-out in Au+Au collisions
• Probing isospin- and momentum-dependent nuclear effective interactions in neutron-rich matter
• Antiflow of kaons in relativistic heavy ion collisions
• K^0 and Λproduction in Ni + Ni collisions near threshold
• Measurement of the in-medium K0 inclusive cross section in pi- -induced reactions at 1.15 GeV/c
• Sub-threshold production of K^{0}_{s} mesons and Λ hyperons in Au(1.23A GeV)+Au
• Nuclear symmetry energy from the Fermi-energy difference in nuclei
• Observation of different azimuthal emission patterns for K+ and of K- mesons in Heavy Ion Collisions at 1-2 AGeV
• An improved single particle potential for transport model simulations of nuclear reactions induced by rare isotope beams
• Medium effects in proton-induced $K^0$ production at 3.5 GeV
• Kaon production and propagation at intermediate relativistic energies
• Azimuthal Emission Patterns of $K^{+}$ and of $K^{-}$ Mesons in Ni + Ni Collisions near the Strangeness Production Threshold
• Extended Skyrme interactions for transport model simulations of heavy-ion collisions
• Kaon dispersion relation and flow in relativistic heavy-ion collisions
• Antikaon Production and Medium Effects in Heavy Ion Collisions at AGS
• Near-threshold $K^{+}$ Production in Heavy-ion Collisions
• Strange meson production in Al+Al collisions at 1.9A GeV
• Kaon differential flow in relativistic heavy-ion collisions
• Directed and elliptic flows of protons and deuterons in HADES Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=2.4$ GeV
• Effects of density-dependent scenarios of in-medium nucleon-nucleon interactions in heavy-ion collisions
• Neutron-proton differential transverse flow in ${}^{132}$Sn + ${}^{124}$Sn collisions at 270 MeV/nucleon