scholarly journals Color Transparency and the Energy Evolution of Final-State Interactions in Charmonium Photoproduction

1991 ◽  
Author(s):  
A. Gardner ◽  
Susan Gardner
Keyword(s):  
Energy Evolution ◽  
Final State ◽  
Color Transparency ◽  
Final State Interactions

scholarly journals QUARK CONFINEMENT AND COLOR TRANSPARENCY IN A GAUGE-INVARIANT FORMULATION OF QCD

1999 ◽  
Vol 14 (17) ◽  
pp. 2745-2767 ◽  
Author(s):  
LUSHENG CHEN ◽  
KURT HALLER
Keyword(s):  
Gauge Field ◽  
Nonlocal Interaction ◽  
Color Singlet ◽  
Color Charge ◽  
Final State ◽  
Gauge Invariant ◽  
Color Transparency ◽  
Charge Densities ◽  
Final State Interactions ◽  
Invariant Gauge

We examine a nonlocal interaction that results from expressing the QCD Hamiltonian entirely in terms of gauge-invariant quark and gluon fields. The interaction couples one quark color-charge density to another, much as electric charge densities are coupled to each other by the Coulomb interaction in QED. In QCD, this nonlocal interaction also couples quark color-charge densities to gluonic color. We show how the leading part of the interaction between quark color-charge densities vanishes when the participating quarks are in a color singlet configuration, and that, for singlet configurations, the residual interaction weakens as the size of a packet of quarks shrinks. Because of this effect, color-singlet packets of quarks should experience final state interactions that increase in strength as these packets expand in size. For the case of an SU(2) model of QCD based on the ansatz that the gauge-invariant gauge field is a hedgehog configuration, we show how the infinite series that represents the nonlocal interaction between quark color-charge densities can be evaluated nonperturbatively, without expanding it term-by-term. We discuss the implications of this model for QCD with SU(3) color and a gauge-invariant gauge field determined by QCD dynamics.

Final-state interactions and quasi-free scattering in the 2H(α, pα)n reaction

1974 ◽  
Vol 222 (3) ◽  
pp. 429-444 ◽  
Author(s):  
T. Rausch ◽  
H. Zell ◽  
D. Wallenwein ◽  
W. Von Witsch
Keyword(s):  
Final State ◽  
Final State Interactions

scholarly journals Final state interactions in WW production

1998 ◽  
Vol 421 (1-4) ◽  
pp. 341-348 ◽  
Author(s):  
A. Donnachie ◽  
P.V. Landshoff
Keyword(s):  
Final State ◽  
Final State Interactions
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