dorsal/arxiv
View SchemaAxial Transition Form Factors and Pion Decay of Baryon Resonances
| Authors | B. Julia-Diaz, D. O. Riska, F. Coester |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0406015 |
| URL | https://arxiv.org/abs/nucl-th/0406015 |
| DOI | 10.1103/PhysRevC.70.045204 |
| Journal | Phys.Rev. C70 (2004) 045204 |
Abstract
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 Poincar\'e 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.
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"abstract": "The pion decay constants of the lowest orbitally excited states of the\nnucleon and the $\\Delta(1232)$ along with the corresponding axial transition\nform factors are calculated with Poincar\\\u0027e covariant constituent-quark models\nwith instant, point and front forms of relativistic kinematics. The model wave\nfunctions are chosen such that the calculated electromagnetic and axial form\nfactors of the nucleon represent the empirical values in all three forms of\nkinematics, when calculated with single-constituent currents. The pion decay\nwidths calculated with the three forms of kinematics are smaller than the\nempirical values. Front and instant form kinematics provide a similar\ndescription, with a slight preference for front form, while the point form\nvalues are significantly smaller in the case of the lowest positive parity\nresonances.",
"arxiv_id": "nucl-th/0406015",
"authors": [
"B. Julia-Diaz",
"D. O. Riska",
"F. Coester"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.70.045204",
"journal_ref": "Phys.Rev. C70 (2004) 045204",
"title": "Axial Transition Form Factors and Pion Decay of Baryon Resonances",
"url": "https://arxiv.org/abs/nucl-th/0406015"
},
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