Electromagnetic decays of baryon resonances in the harmonic-oscillator model

David Faiman, Archibald W. Hendry

Research output: Contribution to journalArticlepeer-review

91 Scopus citations


The harmonic-oscillator model for baryons is used to estimate the radiative widths of the observed N* resonances. In the "second resonance region" of pion photoproduction, both the S11(1550) and D13(1525) resonances [and possibly the P11(1470), depending on what should be taken as its Nπ width] are expected to be important, while in the "third resonance region" F15(1690), S11(1710), and D13(1690) are expected to have comparable contributions. The mixing angle between the two S11 resonances is determined to be about 35°. In inelastic electron scattering ep→eN*, the S11(1550) and D13(1525) resonances are expected to dominate over the P11(1470). The neutral P11(1470) radiative width is found to be smaller than the charged width, in contrast to an SU(3) 1̄0̄ assignment for this resonance.

Original languageEnglish
Pages (from-to)1572-1577
Number of pages6
JournalPhysical Review
Issue number5
StatePublished - 1 Dec 1969
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


Dive into the research topics of 'Electromagnetic decays of baryon resonances in the harmonic-oscillator model'. Together they form a unique fingerprint.

Cite this