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Strangeness Production in Heavy-Ion Collisions and Antiproton-Annihilation
H. Lenske
Institut für Theoretische Physik JLU Giessen
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Agenda:
• Strangeness Production by Resonance Excitation
• S=-1 Strangeness Production in Heavy Ion Collisions
• S=-2,-3 Multi-Strangeness Production by Antiproton
Annihilation on Nuclei
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Strangeness Production by Resonance Excitation in Nuclear
Matter
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Strangeness Production at “GSI”-Energies : The Giessen Resonance Model
Target emission Projectile emission A (p,K+)ΛB
A (π+,K+)ΛB* A (γ,K+)ΛB′
+
A (p,K+)ΛB
R. Shyam, H.L., PRC77 (2008) 052201; NPA839 (2010) 51; PRC81 (2010) 015204; PRD90 (2014) 1, 014017; PRD (2016) in print.
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Strangeness Production in Baryonic Matter
, ... , ...thres F b
F N Y b Ks s m m
π= =
≥ = +∑ ∑
…see also:
*. . e g N N N N Y N K+ → + → + +
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Fragmentation Reactions
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Scenario of a fragmentation reaction (Tlab>2AGeV)
Gaitanos, Lenske, Phys. Lett. B 675, 297 (2009); Phys. Lett. B 663, 197 (2008) GiBUU: Phys. Rept. 512 (2012) 1, O. Buss, Th. Gaitanos, et al.
GiBUU Transport Theory & SMM Grand Canonical Fragment Production
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Λ Production X-section
Fragment Production X-section
Formation of a Hypernucleus by capture of a Λ by a pre-formed fragment F:
Structure GiBUU SMM
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Production of Light Nuclei from 136Xe+Pb by GiBUU+SMM (FOPI data)
Th. Gaitanos et al.: PL B663, 197 (2008) & PL B675 (2009) 297
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Production of Hypernuclei in 12C+12C@2AGeV: HypHI@(S)FRS
Th. Gaitanos, HL et al., Phys. Lett. B 675, 297 (2009), NPA 914 (2013) 405
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S=-2 Hypernuclear Formation by
Antiproton-Annihilation
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Hadro-Production in Proton and Antiproton Collisions on Nuclei as a Function of Reaction Time
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Rapidity Distribution of Fragments
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Hypernuclei@PANDA ΛΛ Nucleus Formation by Ξ secondary beams
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Hypernuclei@PANDA S=-1 and S=-2 Hypernuclear Yields in Antiproton
Annihilation on a Nucleus
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Density Evolution in Antiproton- and Cascade- Nucleus Collisions
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S=-3 Multi-Strangeness Production
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Elementary S=-2 Interaction Channels in Free Space
Th. Gaitanos, H.L. Phys. Lett. B 737 (2014) 256
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Elementary Ω-Production by Antiproton-Proton Annihilation
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Secondary and Ternary Routes to Ω− - Production Dominant: K- / K-* + Y/Y* (S=-1) Ω- + K+
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Ω--Production by Secondary Ξ-Beams
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Summary and Outlook • Strangeness production through baryon resonances
• Heavy Ion collisions and hypernuclear fragmentation
• Multi-Strangeness production in antiproton annihilation
• Dominance of hadronic strangeness accumulation scenarios
• SU(3) anti-octet physics: anti-baryons in nuclear matter
• Charmed mesons and hyperons ( PRD (2015), PRD (2016))
…together with:
Madhumita Dhar, Theo Gaitanos, Alexei Larionov, Radhey Shyam
Supported by BMBF, DFG, GSI, and HIC for FAIR