Regge Pole Plus Background Model of Backward πp Scattering
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Published:1974-07-01
Issue:13
Volume:52
Page:1155-1159
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ISSN:0008-4204
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Container-title:Canadian Journal of Physics
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language:en
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Short-container-title:Can. J. Phys.
Affiliation:
1. University of Toronto, Department of Physics, Toronto, Ontario
Abstract
We present a model of backward π+p, π−p, and π−p charge exchange scattering consistent with our earlier approach to forward π−p charge exchange and backward π+p. We consider two body differential cross section data which exhibits a dip–bump structure as well as nonzero polarization. This is explained in terms of a dominant Regge pole vanishing at the dip accompanied by a background. The background is primarily responsible for the large u behavior of the cross section which includes the rise after the dip. It is assumed that the presence of nonzero polarization dictates this behavior. We isolate the I = 3/2 amplitude in π−p backwards and determine the I = 1/2 amplitude from π+p backwards. A prediction for π−p → nπ0 follows.
Publisher
Canadian Science Publishing
Subject
General Physics and Astronomy