Nonperturbative QCD calculations of (quasi) elastic processes

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NonperturbativeQCD calculations of (quasi)
elastic processes
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VECTOR MESONS

• r , w , f , Y , U

• VIRTUAL PHOTON
• g(Q2)
• PROTON
• p

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Polarizations T , L

• Wave functions
• Photons and vector mesons Quark-antiquark
  systems
• Proton quark-diquark

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Vector mesons BL and BSW
wfOverlapsltphoton dipole(r)
VMgtdipole-proton interactionIntegrate over
all dipolesthat form the wave functions
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Mechanisms for the dipole-dipole
interactionPomerons, QCD vacuum
correlations, two-gluon exchanges Perturbative
Vs NonperturbativeUnique calculations? Free
parameters? Unified description of all vector
mesons
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omega meson production
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