Axial transition form factors and pion decay of baryon resonances
- Helsinki Institute of Physics and Department of Physical Sciences, P. O. Box 64, 00014 University of Helsinki (Finland)
The pion decay constants of the lowest orbitally excited states of the nucleon and the {delta}(1232) along with the corresponding axial transition form factors are calculated with Poincare covariant constituent-quark models with instant, point, and front forms of relativistic kinematics. The model wave functions are chosen such that the calculated electromagnetic and axial form factors of the nucleon represent the empirical values in all three forms of kinematics, when calculated with single-constituent currents. The pion decay widths calculated with the three forms of kinematics are smaller than the empirical values. Front and instant form kinematics provide a similar description, with a slight preference for front form, while the point form values are significantly smaller in the case of the lowest positive parity resonances.
- OSTI ID:
- 20695686
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 70; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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