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Some properties of the S-matrix in a model coupled-channel calculation

✍ Scribed by J Quintanilla; P.A Mello

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
573 KB
Volume
75
Category
Article
ISSN
0003-4916

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✦ Synopsis

In this paper we give the explicit solution to a coupled-channel problem consisting of two open channels coupled by a separable interaction. It is shown that the cross sections exhibit one rather narrow anomaly which displaces to higher energies as the coupling is increased and at the same time its width decreases and increases alternatively. This behavior is analyzed in terms of the eigenphaseshifts and also in terms of the motion of the poles of the S-matrix as a function of the coupling strength.

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