Chiral effective-field theory in the Delta(1232) region: II. radiative pion photoproduction
| dc.creator | Pascalutsa, Vladimir | |
| dc.creator | Vanderhaeghen, Marc | |
| dc.date | 2007-09-28 | |
| dc.date | 2007-10-01 | |
| dc.date.accessioned | 2026-07-07T11:37:36Z | |
| dc.date.available | 2026-07-07T11:37:36Z | |
| dc.description | We present a theoretical study of the radiative pion photoproduction on the nucleon ($γN \to πN γ'$) in the $\De$-resonance region, with the aim to determine the magnetic dipole moment (MDM) of the $Δ^+(1232)$. The study is done within the framework of chiral effective-field theory where the expansion is performed (to next-to-leading order) in the $δ$ power-counting scheme which is an extension of chiral perturbation theory to the $Δ$-resonance energy region. We present the results for the absorptive part of the $Δ$ MDM, as well as perform a sensitivity study of the dependence of $γN \to πN γ'$ observables on the real part of the $Δ$ MDM. We find that an asymmetry for circular polarization of the photon beam may provide a model-independent way to measure the $Δ$ MDM. | |
| dc.description | 32 pages, 14 figs | |
| dc.identifier | https://arxiv.org/abs/0709.4583 | |
| dc.identifier | http://arxiv.org/abs/0709.4583 | |
| dc.identifier | Phys.Rev.D77:014027,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.77.014027 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/199259 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Nuclear Experiment | |
| dc.subject | Nuclear Theory | |
| dc.title | Chiral effective-field theory in the Delta(1232) region: II. radiative pion photoproduction | |
| dc.type | text |