|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||PHYSICS ♦ BINDING ENERGY ♦ BOUND STATE ♦ DISPERSION THEORY ♦ ELEMENTARY PARTICLES ♦ INTERACTIONS ♦ K-MATRIX ♦ MATRICES ♦ POLOLOGY ♦ RELATIVITY THEORY ♦ RESONANCE ♦ RIEMANN SHEET|
|Abstract||Within the framework of relativistic dispersion theory, the reaction K- matrix is considered as an analytic matrixfunction. For the case of two coupled two-particle channels, it is shown that the elements of this matrix are regular functions except for cuts due to dynamical branch lines of the amplitudes and possible isolated poles. Expressing the reaction amplitudes in terms of the elements of the K matrix makes it possible to exhibit the Riemann surface of these amplitudes. The connection between resonance and poles of the amplitudes in secondary Riemann sheets is discussed with the help of the K matrix formalism. The Possible connection between a resonance and a bound state is considered. (auth)|
|Learning Resource Type||Article|
|Publisher Department||Univ. of Chicago|
|Organization||Univ. of Chicago|
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