Published November 1975
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Electromagnetic N-N* transition form factors
Description
We define constraint-free electromagnetic N-N*(J) transition form factors for general abnormal and normal parity transitions and relate them to multipole and helicity transition form factors. Possible parametrizations of the constraint-free form factors are discussed, and various theoretically motivated simplifications are considered which are then compared to the available transition form factor data. If analysed in terms of the constraint-free form factors, a very simple picture is obtained for the three leading resonances P33, D13, and F15. (orig.)
Availability note (English)
MF available from INIS under the Report Number.Abstract (German)
Wir legen zwangsfreie elektromagnetische N-N*(J)-Uebergangsfaktoren fuer allgemeine anomale und normale Paritaetsuebergaenge fest und setzen sie zu Multipol- und Helizitaetsformfaktoren in Beziehung. Moegliche Parametrisierungen der zwangsfreien Fomfaktoren werden diskutiert und verschiedene theoretisch motivierte Vereinfachungen betrachtet, die dann mit den vorhandenen Daten ueber Uebergangsformfaktoren verglichen werden. Analysiert man die drei Hauptresonanzen P33, D13 und F15 mit Hilfe der zwangsfreien Formfaktoren, so ergibt sich ein sehr einfaches Bild. (orig./BJ)
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Additional details
Publishing Information
- Imprint Pagination
- 39 p.
- Report number
- DESY--75/48
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 7256888
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- DELTA-1236 RESONANCES; DELTA-1950 RESONANCES; DIFFERENTIAL CROSS SECTIONS; ELECTROPRODUCTION; FORM FACTORS; LEVEL WIDTHS; N*RESONANCES; N-1520 RESONANCES; N-1688 RESONANCES; NUCLEONS; PHOTONS; PHOTOPRODUCTION; ROSENBLUTH FORMULA
- Descriptors DEC
- BARYON RESONANCES; BARYONS; BASIC INTERACTIONS; CROSS SECTIONS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; INTERACTIONS; MASSLESS PARTICLES; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; RESONANCE PARTICLES
Optional Information
- Notes
- 5 figs.; 31 refs.