Oscillating color transparency in πA>πp(A1) and γA>πN(A1)
Abstract
We study the energy dependence of 90° c.m. fixed angle scattering of πp>π'p' and γp>π^{+}n at large momentum transfer. The experimental data are found to be well described in terms of complex interfering short and long distance amplitudes with dynamical phases induced by Sudakov effects. We calculate the color transparency ratio for the corresponding processes in nuclear environments πA>π'p(A1) and γA>πN(A1), taking nuclear filtering into account. We predict that the transparency ratio for these reactions will oscillate with energy. This provides an important test of the Sudakov phase shift and nuclear filtering hypothesis, which can be checked in upcoming experiments.
 Publication:

Physical Review D
 Pub Date:
 May 2002
 DOI:
 10.1103/PhysRevD.65.094027
 arXiv:
 arXiv:hepph/0005126
 Bibcode:
 2002PhRvD..65i4027J
 Keywords:

 13.85.Dz;
 14.20.Dh;
 14.40.n;
 Elastic scattering;
 Protons and neutrons;
 Mesons;
 High Energy Physics  Phenomenology;
 Nuclear Experiment;
 Nuclear Theory
 EPrint:
 5 pages, 2 figures, uses revtex