Dynamical coupled-channels model ofK−preactions: Determination of partial-wave amplitudes

We briefly review our recent works where we use dispersion relations to constrain fits to data on πK → πK and $ \pi \pi \to K\bar K $ providing a simple but consistent description of these processes. Then, simple analytic methods allow to extract parameters of poles associated to light strange resonances without assuming a particular model. We also present preliminary results on a model-independent determination of the controversial κ or $ K_0^*\left( {700} \right) $ resonance parameters, by using those constrained parameterizations as input for partial-wave hyperbolic dispersion relations that allow to perform a rigorous analytic continuation to determine its associated pole.

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RESONANCE DYNAMICS IN COUPLED CHANNELS

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194514600544 ◽

2014 ◽

Vol 26 ◽

pp. 1460054 ◽

Cited By ~ 9

Author(s):

MICHAEL DÖRING

Keyword(s):

Partial Wave ◽

Gauge Invariance ◽

Pion Photoproduction ◽

General Properties ◽

Coupled Channels ◽

Resonance Properties ◽

S Matrix ◽

Three Body ◽

Coupled Channel

General properties of the S-matrix, such as constraints from two- and three-body unitarity as well as gauge invariance, are discussed and illustrated for the example of a dynamical coupled channel approach. The Jülich model has been updated to analyze πN, ηN, and KY production as well as pion photoproduction. Partial wave amplitudes and resonance properties are determined.

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Determination of partial-wave inelasticities for elastic pion-nucleon scattering with the aid of experimental data on πN → ππN processes in the beam-momentum range 300 < P beam < 500 MeV/c

Physics of Atomic Nuclei ◽

10.1134/s1063778808110045 ◽

2008 ◽

Vol 71 (11) ◽

pp. 1860-1879 ◽

Cited By ~ 1

Author(s):

V. A. Kozhevnikov ◽

S. G. Sherman

Keyword(s):

Experimental Data ◽

Partial Wave ◽

Beam Momentum ◽

Momentum Range ◽

Nucleon Scattering ◽

Pion Nucleon

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Determination of low-energy parameters of neutron-proton scattering on the basis of modern experimental data from partial-wave analyses

Physics of Atomic Nuclei ◽

10.1134/s1063778807040072 ◽

2007 ◽

Vol 70 (4) ◽

pp. 669-675 ◽

Cited By ~ 8

Author(s):

V. A. Babenko ◽

N. M. Petrov

Keyword(s):

Experimental Data ◽

Partial Wave ◽

Low Energy ◽

Proton Scattering ◽

Energy Parameters

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Coupled-Channels Partial-Wave Analysis of Kaon Photoproduction

Progress of Theoretical Physics Supplement ◽

10.1143/ptps.186.216 ◽

2010 ◽

Vol 186 ◽

pp. 216-221 ◽

Cited By ~ 1

Author(s):

Olaf Scholten

Keyword(s):

Partial Wave ◽

Partial Wave Analysis ◽

Wave Analysis ◽

Coupled Channels

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THE SAID PWA PROGRAM

International Journal of Modern Physics A ◽

10.1142/s0217751x0301437x ◽

2003 ◽

Vol 18 (03) ◽

pp. 449-455 ◽

Cited By ~ 41

Author(s):

R. A. Arndt ◽

I. I. Strakovsky ◽

R. L. Workman

Keyword(s):

Partial Wave ◽

Database Management ◽

Pion Photoproduction ◽

Partial Wave Analysis ◽

Wave Analysis ◽

Amplitude Analysis ◽

Multipole Analysis ◽

Resonance Properties ◽

Made In

The range of SAID activities is outlined. These include database management, partial-wave analysis, and the determination of resonance properties. As the relationships between amplitude analysis, partial-wave analysis, and resonance extraction are often confused, comments are made in order to clarify the key differences. The multipole analysis of single-pion photoproduction is described in detail in order to show model-dependence appears in our fits to data.

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