Quark Hadron Transition

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Presentation transcript:

Quark Hadron Transition Misak Sargsian Florida International University PN12, JLAB 2-Nov-2004

Large intermediate/final hadronic masses

fixed s large t: -t > 1 GeV2

Large intermediate/final hadronic masses - Large CM angle disintegration of nuclei: Mx - Seminclusive Nuclear DIS Mx - Resonance Production in Backward Direction Mx

Fixed masses but large momentum transfers fixed s large t: -t > 1 GeV2

- Large CM angle disintegration of nuclei: Mx

Hard Rescattering Mx Mx

Brodsky,Carlson,Lipkin Phys.Rev.D 1979 NN NN NN NN

Frankfurt, Miller, M.S. Sargsian PRL 2000

Schulte, et al. Phys. Rev.C 2002

Mirazita, et al, Phys. Rev. C 2004

M.S. Phys. Lett.B 2004

Hard Disintegration of pp from 3He Brodsky, Frankfurt, Gilman,Hiller, Miller,Piasetzky,M.S. Strikman Phys.Lett. B 2004

- Seminclusive Nuclear DIS Final State Interaction of the Spectator Nucleons is Very Sensitive to the High x Structure of Struck Nucleon Feynman Mechanism Minimal Fock Component Approximation

- First term recovers PWIA contribution - Pole term cancels due to orthogonality - Non-Pole (off-shell) term accounts for FSI

Solid line - Pt=0 Dashed line - Pt=500 MeV/c

Q2=1.8 GeV2 x=0.45 WN=1.7 GeV2 pt = 300 MeV/c

- Separation of Forward/Backward Production - Resonance Production in Backward Direction Survey Experiments - Separation of Forward/Backward Production

Deuteron (t=0,s=1) two nucleons two-separately color neutral objects Chiral Restoration and Hidden Color In the world where chiral symmetry is broken Deuteron (t=0,s=1) two nucleons two-separately color neutral objects In the world where chiral symmetry is unbroken Brodsky, Ji, 1985 Signature of Chiral Simmetry Restoration with an increase of internal momenum in the deuteron

with an increase of internal momenum in the deuteron

- Large CM angle disintegration of nuclei: Some Outlook With 12 GeV it is possible to undertake consistent program on Nuclear QCD Studies - Large CM angle disintegration of nuclei: Mx Structure of NN scattering - Seminclusive Nuclear DIS Mx Structure of DIS scattering - Resonance Production in Backward Direction Transition to QCD deg of freedom at small distances in nuclei Mx