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Hadron Interactions at JLab 12 GeV - Lattice QCD and Experimental Program

This presentation discusses the conceptual point of hadron view and quark view, with a focus on short-distance and long-distance physics. Topics include deep inelastic scattering, pionic-DVCS, and nucleon properties. The use of lattice QCD and its potential impact on nuclear physics is also explored.

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Hadron Interactions at JLab 12 GeV - Lattice QCD and Experimental Program

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  1. Hadron - Hadron InteractionsJLab @ 12 GeV Presentation…… y and Lattice QCD --- Martin Savage Color Transparancy --- Jean-Marc Laget November 5, 2004, JLab

  2. Conceptual Point Hadron View Quark View Short-Distance Long-Distance – Where is the interesting physics? P >> Lc P << Lc or

  3. Deep Inelastic Scattering 1/Q 1/Q << r << 1/ Lc N N , p p r ~ 1/ Lc r >> 1/ Lc

  4. Pionic-DVCS g* g p p p

  5. Y-N Interactions Q Q y y rQQ Q Q Rough Estimate Lattice QCD p << 1/ rQQ p ~ 1/ rQQ Symmetries, Expt, or Lattice QCD c1 Gmn Gmn C2 Gml Glnvmvn Nucleon < N | | N > +

  6. Y (2s)Y (1s)pp Fit to Data Expect : d1,2 ~ rQQ3 consistent ! Want : c1,2 and d1,2

  7. g* N y N + ... g g* g* N N ? y y N N High Energy y Rigour??? Psionic-DVCS ???? Useful??? Rigour???

  8. g* d L N K + ... g* g g* N N N K N K L N L N Lambda-onic-DVCS ??? Useful??? Rigour???? High Energy L Rigour???

  9. Nuclear Physics and lattice QCD LHPC • University of Washington • Lawrence Berkeley Laboratory • University of New Hampshire • University of Barcelona • JLab • MIT • University of Maryland

  10. Topics that are or can or should be tackled today with Lattice QCD • Nucleon and p Properties … • MN , mN , gA , qm..n , as functions of mq , a , V • The NN Systems … • d(s) , LA1, .. • Hyperon Properties and Systems… • ML , L Np , L N L N .. • V(R) between Mesons and Baryons with one Q : DD • Yp Yp , YN YN , YY YY

  11. Maiani-Testa: End of the Innocence,pp Scattering GNN (s)Eucl= GNN (s)Mink Away from Kinematic Thresholds at infinite Volume d (s) ? pp pp CP-PACS

  12. NN-Scattering • Mq–dependence of nuclear properties – Little is known……..this is all !!! Quenched Data (Fukugita et al, 1995) , Latt = 204 A Lattice Measurement at this mp would fix counterterms : D2

  13. ElectroWeak Matrix Elements (William Detmold and MJS) L X L/10 X L/10 X T lattice

  14. Comments • Coherent Lattice QCD and experimental program • Y-N and L-N Interactions look promising • Potentially exciting program in charm physics

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