| Issue |
EPJ Web Conf.
Volume 134, 2017
Subnuclear Structure of Matter: Achievements and Challenges
|
|
|---|---|---|
| Article Number | 02003 | |
| Number of page(s) | 5 | |
| Section | Hadron properties | |
| DOI | https://doi.org/10.1051/epjconf/201713402003 | |
| Published online | 26 January 2017 | |
https://doi.org/10.1051/epjconf/201713402003
Magnetic Moments of Excited Baryons
II. Physikalisches Institut, Universität Gießen, Heinrich Buff Ring 16 35392, Gießen
* e-mail:Volker.Metag@exp2.physik.uni.giessen.de
Published online: 26 January 2017
In project A.3, the reaction γ p → π0γ’p has been studied using the TAPS photon spectrometer in the energy range √s= 1221-1331 MeV. Energy tagged photon beams have been produced with the Glasgow tagging spectrometer from electron beams provided by the MAMI-B accelerator. Angle and energy differential cross sections have been measured and compared to theoretical calculations. This comparison allows the magnetic moment of the Δ+ isobar to be extracted for the first time to μΔ+ = [2.7+1.3−1.0(stat)±1.5(syst)±3(theo)] μN. In an extension of the A3 project to the meson sector, the time-like transition form factor of the η meson has been measured with the Crystal Ball/TAPS detector system at MAMI-C.
© The Authors, published by EDP Sciences, 2017
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