dorsal/arxiv
View SchemaBaryon Current Matrix Elements in a Relativistic Quark Model
| Authors | Simon Capstick, B. D. Keister |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9701007 |
| URL | https://arxiv.org/abs/nucl-th/9701007 |
Abstract
Current matrix elements and observables for electro- and photo-excitation of baryons from the nucleon are studied in a light-front framework. Relativistic effects are examined by comparison to a nonrelativistic model and can typically be of order 20-25%, but can be larger for certain matrix elements, such as radial transitions conventionally used to describe the Roper resonance. A systematic study shows that the violation of rotational covariance of the baryon transition matrix elements stemming from the use of one-body currents is generally small.
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"abstract": "Current matrix elements and observables for electro- and photo-excitation of\nbaryons from the nucleon are studied in a light-front framework. Relativistic\neffects are examined by comparison to a nonrelativistic model and can typically\nbe of order 20-25%, but can be larger for certain matrix elements, such as\nradial transitions conventionally used to describe the Roper resonance. A\nsystematic study shows that the violation of rotational covariance of the\nbaryon transition matrix elements stemming from the use of one-body currents is\ngenerally small.",
"arxiv_id": "nucl-th/9701007",
"authors": [
"Simon Capstick",
"B. D. Keister"
],
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"nucl-th"
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"title": "Baryon Current Matrix Elements in a Relativistic Quark Model",
"url": "https://arxiv.org/abs/nucl-th/9701007"
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