Existence of partial-wave two-cluster atomic scattering amplitudes

1979 ◽  
Vol 57 (3) ◽  
pp. 449-456 ◽  
Author(s):  
J. Nuttall ◽  
S. R. Singh
Keyword(s):  
Scattering Amplitudes ◽  
Partial Wave ◽  
Scattering Problem ◽  
Potential Scattering ◽  
Atomic Systems ◽  
Almost Everywhere ◽  
Cluster Threshold ◽  
Channel Potential ◽  
Atomic Scattering ◽  
Coupled Channel

It is shown, with some restrictions, that two-cluster partial wave scattering amplitudes for atomic systems whose particles interact via two-body Coulomb potentials exist almost everywhere in the energy range below any three-cluster threshold. The method of proof is to reduce the problem to a coupled channel potential scattering problem with pseudo-local potentials. Boost analyticity is used to derive the pseudo-locality.

High Energy Behavior in Infinite Channel Potential Scattering

1974 ◽  
Vol 52 (20) ◽  
pp. 2002-2006
Author(s):  
A. Z. Capri ◽  
H. J. Kreuzer
Keyword(s):  
Optical Potential ◽  
Bounded Function ◽  
Scattering Problem ◽  
High Energy ◽  
Potential Scattering ◽  
Regge Trajectories ◽  
High Energy Behavior ◽  
Energy Behavior ◽  
Channel Potential

We show that for an infinite channel potential scattering problem with bordered interaction, the resultant generalized optical potential is always a bounded function of the energy if it exists as an operator. Thus for this type of model no infinitely rising Regge trajectories are possible.

Current status of a coupled-channel partial wave analysis using data from CLAS at Jefferson Lab

NSTAR 2007 ◽  
2008 ◽  
pp. 127-132
Author(s):  
M. Bellis ◽  
Z. Krahn ◽  
M. McCracken ◽  
C. Meyer ◽  
M. Williams
Keyword(s):  
Partial Wave ◽  
Partial Wave Analysis ◽  
Current Status ◽  
Wave Analysis ◽  
Jefferson Lab ◽  
Using Data ◽  
Coupled Channel

scholarly journals The Λ(1405) with one pole

2020 ◽  
Vol 241 ◽  
pp. 03002
Author(s):  
Eberhard Klempt
Keyword(s):  
Partial Wave ◽  
Good Description ◽  
Mass Range ◽  
Partial Wave Analysis ◽  
Wave Analysis ◽  
Channel System ◽  
Analysis Group ◽  
Coupled Channel

The Λ(1405)1/2- resonance is discussed and a fit of the Bonn-Gatchina (BnGa) partial-wave- analysis group is presented to data relevant for this resonance. In the Σπ - NK coupled channel system, no Σ pole and only one Λ pole in the mass range from the Σπ threshold to 1500 MeV is required to get a good description of the data.

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