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Hadron - Hadron Interactions JLab @ 12 GeV and Lattice QCD --- Martin Savage Color Transparancy --- Jean-Marc Laget Presentation…… November 5, 2004, JLab
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Conceptual Point Quark View Hadron View Short-DistanceLong-Distance – Where is the interesting physics? P >> P << or
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Deep Inelastic Scattering 1/Q 1/Q << r << 1/ r ~ 1/ N, r >> 1/ N
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Pionic-DVCS
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N Interactions Nucleon Q Q QQ r QQ p ~ 1/ r QQ p << 1/ r QQ c 1 G G C 2 G G v v + < N || N > Rough Estimate Lattice QCD Symmetries, Expt, or Lattice QCD
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2s) 1s) Fit to Data Expect : d 1,2 ~ r QQ 3 consistent ! Want : c 1,2 and d 1,2
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* N N N N N N Psionic-DVCS ???? Useful??? Rigour??? High Energy Rigour??? ?
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* d N K N K N K Lambda-onic-DVCS ??? Useful??? Rigour???? High Energy Rigour??? N N N N
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Nuclear Physics and lattice QCD University of Washington Lawrence Berkeley Laboratory University of New Hampshire University of Barcelona LHPC JLabMIT University of Maryland
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Topics that are or can or should be tackled today with Lattice QCD Nucleon and Properties … M N, N, g A, , as functions of m q, a, V M N, N, g A, , as functions of m q, a, V The NN Systems … (s), L A 1,.. (s), L A 1,.. Hyperon Properties and Systems… M , N , N N.. M , N , N N.. V(R) between Mesons and Baryons with one Q : DD
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Maiani-Testa: End of the Innocence, Scattering (s) ? G NN (s) Eucl = G NN (s) Mink Away from Kinematic Thresholds at infinite Volume CP-PACS
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NN-Scattering M q –dependence of nuclear properties – Little is known……..this is all !!! Quenched Data (Fukugita et al, 1995), Latt = 20 4 A Lattice Measurement at this m would fix counterterms : D 2
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ElectroWeak Matrix Elements L X L/10 X L/10 X T lattice (William Detmold and MJS)
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Comments Coherent Lattice QCD and experimental program N and N Interactions look promising Potentially exciting program in charm physics
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