Forward reactions and the exploration of particle dynamics |
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Authors: | G R Goldstein M J Moravcsik D A Hutcheon |
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Institution: | (1) Department of Physics, Tufts University, 02155 Medford, MA, USA;(2) Department of Physics and Institute of Theoretical Science, University of Oregon, 97403 Eugene, OR, USA;(3) TRIUMF, 4004 Wesbrook Mall, V6T 2A3 Vancouver, BC, Canada |
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Abstract: | Since the polarization structure of reactions in the collinear directions is greatly simplified, since reactions at very high energies tend to be predominantly close to collinear, and since the one-particle exchange mechanisms are more pronounced in the forward direction, tests of one-particle-exchange (OPE) mechanisms are formulated for collinear reactions. The number of amplitudes are derived for a reaction with arbitrary spins, and examples for the practically occurring cases are given. The results are applied to the reaction 1/2+1/2 1+1 and in particular ton+p d+ (or to its inverse). A detailed procedure is outlined for a step-by-step testing of the various OPE processes in this reaction through a series of polarization experiments. In particular, the tests can separate out theJ=0 andJ=1/2 OPE processes. |
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