TY - JOUR
T1 - Electromagnetic decays of baryon resonances in the harmonic-oscillator model
AU - Faiman, David
AU - Hendry, Archibald W.
N1 - Funding Information:
Supported by a NATO Studentship administered by the Science Research Council, London, United Kingdom.
PY - 1969/12/1
Y1 - 1969/12/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0011398571&partnerID=8YFLogxK
U2 - 10.1103/PhysRev.180.1572
DO - 10.1103/PhysRev.180.1572
M3 - Article
AN - SCOPUS:0011398571
SN - 0031-899X
VL - 180
SP - 1572
EP - 1577
JO - Physical Review
JF - Physical Review
IS - 5
ER -