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Color Transparency and Color Opacity in Coherent Production of Vector Mesons off Light Nuclei at small x

L. Frankfurt·V. Guzey·W. Koepf·M. Sargsian·M. Strikman
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Abstract

Coherent electroproduction of vector mesons off $^2$H and $^4$He is considered in the kinematics of deep inelastic scattering. Special emphasis is given to the $-t\sim 0.8-1$ GeV$^2$ region where the cross section is dominated by the interaction of the $q\bar q$ configuration in the $γ^*$ with two nucleons. These kinematics provide the unique possibilities to study quantitatively in vector meson production the onset of Color Transparency with increasing $Q^2$ as well as its gradual disappearance at very small $x$, i.e., perturbative Color Opacity.

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L. Frankfurt, V. Guzey, W. Koepf, M. Sargsian, M. Strikman. 1996-08-29. Color Transparency and Color Opacity in Coherent Production of Vector Mesons off Light Nuclei at small x. https://arxiv.org/abs/hep-ph/9608492

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