582 research outputs found
Sensitivity to the pion-nucleon coupling constant in partial-wave analyses of elastic pi-N and NN scattering and pion photoproduction
We summarize results obtained in our studies of the pion-nucleon coupling
constant. Several different techniques have been applied to pi-N and NN elastic
scattering data, and the existing database for single-pion photoproduction. The
most reliable determination comes from pi-N elastic scattering. The sensitivity
in this reaction was found to be greater, by at least a factor of 3, when
compared with analyses of NN elastic scattering or single-pion photoproduction.Comment: 10 pages, 1 figure. Talk given at the Uppsala workshop on the
pion-nucleon coupling constan
Partial-Wave Analysis of Single-Pion Production Reactions
We present an overview of our efforts to analyze pion-nucleon elastic
scattering data, along with data from related photo- and electroproduction
reactions, in order to study the baryon spectrum. We then focus on the
Delta(1232) resonance. Fits to pion photo- and electroproduction data have been
used to extract values for the R_EM = E2/M1 and R_SM = S2/M1 ratios as
functions of Q^2. These results are compared to other recent determinations.Comment: 7 pages, 9 figures, the Shape of Hadrons Workshop Proceedings (27-29
April, 2006 Athens, Greece
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