The reaction gamma p ->pi(0) gamma' p and the magnetic dipole moment of the Delta(+)(1232) resonance

Kotulla, M. et al. (2002) The reaction gamma p ->pi(0) gamma' p and the magnetic dipole moment of the Delta(+)(1232) resonance. Physical Review Letters, 89(27), Art. 272001. (doi: 10.1103/PhysRevLett.89.272001)

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The reaction γp→π0γ′p has been measured with the TAPS calorimeter at the Mainz Microtron accelerator facility MAMI for energies between s√=1221–1331  MeV. The cross section’s differential in angle and energy have been determined for the photon γ′ in three bins of the excitation energy. This reaction channel provides access to the magnetic dipole moment of the Δ+(1232) resonance and, for the first time, a value of μΔ+=[2.7+1.0−1.3(stat)±1.5(syst)±3(theor)]μN has been extracted.

Item Type:Articles
Glasgow Author(s) Enlighten ID:McGeorge, Dr John and MacGregor, Professor Douglas and Annand, Dr John
Authors: Kotulla, M., Ahrens, J., Annand, J.R.M., Beck, R., Caselotti, G., Fog, L.S., Hornidge, D., Janssen, S., Krusche, B., McGeorge, J.C., McGregor, I.J.D., Mengel, K., Messchendorp, J.G., Metag, V., Novotny, R., Pfeiffer, M., Rost, M., Sack, S., Sanderson, R., Schadmand, S., and Watts, D.P.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Group:Nuclear Physics
Journal Name:Physical Review Letters
Journal Abbr.:Phys. Rev. Lett.
Publisher:American Physical Society
ISSN (Online):1079-7114

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