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Nuclear Filtering and Quantum Color Transparency: An Introductory Review

  • John P. Ralston
Part of the NATO ASI Series book series (NSSB, volume 333)

Abstract

Color transparency is the proposal that under certain circumstances the observed strong interactions can be controlled and in fact reduced in magnitude. I give a comprehensive review of our approach, which is based on the perturbative QCD study of hard exclusive reactions in free space and in nuclear targets. Topics considered include quasiexclusive reactions with either electron or hadron beams in the initial state, and many kinds of outgoing particles in the final state. The description of color transparency in terms of light-cone matrix elements, and its interesting character as a two-scale pQCD process, is presented as a foundation for theoretical discussion. The phenomenon of nuclear filtering, which involves the modification of quark wave functions in hadrons to smaller transverse space dimensions, leads to a broad new program to study the strong interactions and hadron structure. I review existing experimental data and certain experiments planned at various facilities. A recently formulated systematic method to define color transparency directly in terms of experimental data and with minimal theoretical model dependence plays an important role. The analysis shows evidence that color transparency may already have been observed in the pioneering experiment of Carroll et al. I will also discuss the role of spin and color transparency as powerful tools for learning more about the internal quark configurations of hadrons in future experiments. The subject has the potential for strong scientific complementarity and progress in exploring hadron physics at Brookhaven, SLAC and CEBAF as well as future facilities.

Keywords

Wave Function Orbital Angular Momentum Nuclear Target Transition Form Factor Nuclear Medium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • John P. Ralston
    • 1
  1. 1.Department of Physics and AstronomyUniversity of KansasLawrenceUSA

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