114 research outputs found
Update on Partial-Wave Analysis
Partial-wave analysis is one step in a process connecting experimental
measurements to the N* states we are studying. Progress has been made in the
area of `model-independent' analysis. However, more model-dependent approaches
are needed to cover broader energy ranges. An example of the problems faced by
these more ambitious analyses is given.Comment: 6 pages. Talk given at NSTAR2001, University of Mainz, Germany, March
7-10, 2001. To be published by World Scientifi
Resonance Extraction from the SAID Analysis
Resonances are extracted from a number of energy-dependent and single-energy
fits to scattering data. The influence of recent, precise EPECUR data is
investigated. Results for the single-energy fits are derived using the L+P
method of analysis and are compared to those obtained using contour integration
applied to the global energy-dependent fits.Comment: Contribution to Hadron2015, Newport News, V
Single-channel fits and K-matrix constraints
A K-matrix formalism is used to relate single-channel and multi-channel fits.
We show how the single-channel formalism changes as new hadronic channels
become accessible. These relations are compared to those commonly used to fit
pseudoscalar meson photoproduction data.Comment: 9 pages, 2 figures. A numerical example has been adde
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