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H. Lenske Institut für Theoretische Physik, U. Giessen

Strangeness Production, In-Medium Flavour Dynamics and Hypernuclear Physics. H. Lenske Institut für Theoretische Physik, U. Giessen. Aspects of SU(3) Flavor Physics In-medium Baryon Interactions Covariant Density Functional Theory Hypernuclear Matter, Single L Nuclei and beyond

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H. Lenske Institut für Theoretische Physik, U. Giessen

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  1. Strangeness Production, In-Medium Flavour Dynamics and Hypernuclear Physics H. LenskeInstitut für Theoretische Physik, U. Giessen • Aspects of SU(3) Flavor Physics • In-medium Baryon Interactions • Covariant Density Functional Theory • Hypernuclear Matter, Single L Nuclei and beyond • Strangeness Production on the Nucleon and Nuclei • Summary and Outlook

  2. Strangeness and Hypernuclear Physics: From SU(2) Isospin to SU(3) Flavour Dynamics

  3. What do we learn from (HEAVY) Hypernuclei? • baryon-meson octet coupling constants and vertices gNs, gNw, gNr , gNp, gNd…gLs, gLw,fLw Accessible in Free space NN scattering Accessible in Re-Scattering Processes and Hypernuclei Self-Energies ~ Schroedinger single particle potentials Vc ~ Sw+Ss~ -30MeV Ss(L) = -gLss Sw(L) = gLww Vls ~ Sw-Ss ~??MeV • mean-field dynamical correlations?

  4. DDRH Theory: Octet Flavour DFT by Meson Exchange • Density Functional Theory for Nucleons and Hyperons • Field Theory at the Fermi Momentum Scale • BB Interactions in Free Space by Meson Exchange • In-Medium Interactions by Dirac Brueckner Theory • Density Dependent Vertex Functionals • Covariance and Thermodynamical Consistence

  5. DDRH Flavour Dynamics: Density Dependent Vertices: PLB345 (1995), PRC52 (1995), PRC57 (1998), PRC64 (2001), PRC66 (2002), Springer Lect. Not. (2004)

  6. Nuclear Matter DBHF Vertices (Groningen NN-Potential) Isoscalar Vertices Isovector Vertices

  7. The DDRH Baryon Self-Energies:

  8. DDRH-Scaling of In-Medium Hyperon Interactions Naïve Quark Model Scaling: Non-strange mesons couple only to non-strange quarks  gL(m)= 2/3 gN (m)

  9. Hyperon-Nucleon Vertices at the Mean-Field Level:

  10. DDRH Flavour Dynamics:LSingle Particle Energies Nuclear Matter SL = 28 MeV DDRH Theory: Density Dependent NN and NL Dirac-Brueckner Vertices

  11. DDRH Spectrum for 89Y: Dynamical Correlations?  P. Konrad (Friday/B2) • 89Y = L + 88Y(4-, g.s.) • jj - LCore Interactions • Tensor Interaction

  12. LS0 Flavor Mixing in Asymmetric Nuclear Matter SU(3) DFT  Coupled Channels LS0Mixing in Matter :

  13. DDRH Hypermatter Equation of State (Binding Energy per Baryon) Minimum at 10% L-content: B0=-18MeV at r0=0.21fm-3

  14. DDRH Neutron Star Mass-Radius Relation (TOV Eq.): a4 = 32 MeV a4 = 26 MeV X-ray PRC 64 (2001) 025804; H.L. Springer Lect. Notes (2004) Optical Crab Nebula Chandra X-Ray Observatory and HST Data from the XMM-Newton X-ray space observatory: Gravitational Red-Shift z ~ M/R (Fe-Lines from a series of 28 X-ray bursts from EXO07481676)

  15. Hyperon Interactions and Neutron Stars

  16. The Giessen Model: CC Approach to Strangeness Production on the Nucleon in

  17. KL Photoproduction on the Nucleon in the Giessen Model Coupled Channels Results for CLAS/SAPHIR Data CLAS Data  SAPHIR Data V. Shyklar, H.L., Phys. Rev. C 71, 055206 (2005)

  18. Associated (p,A) Strangeness Production • exploratory for hadronic production at COSY • elementary process for HI production  HypHI@FAIR • extension to electro-production at ELSA, MAMI and JLAB  R. Shyam (Friday/B3) R.Shyam, H.L., PRC 69:065205 (2004); NPA 764:313 (2006)

  19. Auger Spectroscopy ofLHypernuclei at JLAB Electro-Production of a Hypernucleus through a Resonance De-Excitation of a Hypernucleus by Emission of an Auger Neutron C. Keil, H.L., PRC 66, 054307 (2002), A. Magaryan et al., LoI/Exp. Proposal at JLAB

  20. Auger Spectroscopy in 208Pb: Emission from initial 1fLState

  21. Summary, Conclusions and Outlook • QCD in Nuclei: EFT at the Fermi-Momentum Scale • Relativistic Field Theory for Nuclei and Hypernuclei • DDRH-Theory: ab initio SU(3) Flavor Dynamics • Applications to Nuclei, Hypernuclei • Strangeness in Neutron Stars • L-S0 Flavor Mixing in Asymmetric Matter • Open Problem: YY Interactions • Dynamical Correlations and Hyperon Spectral Functions • Production and Spectroscopy of Hypernuclei Contributors: C. Keil, P. Konrad, U. Badarch, R. Shyam, S. Bender, A. Ataie, A. Fedoseew

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