Determination of the Delta++ magnetic dipole moment
Nuclear Theory
2008-11-26 v2 High Energy Physics - Phenomenology
Nuclear Experiment
Abstract
We study the elastic and radiative pi+ p scattering within a full dynamical model which incorporates the finite width effects of the Delta++. The scattering amplitudes are invariant under contact transformations of the spin 3/2 field and gauge-invariance is fulfilled for the radiative case. The pole parameters of the Delta++ obtained from the elastic cross section are m_Delta = 1211.2 \pm 0.4 MeV and Gamma_Delta = 88.2 \pm 0.4 MeV. From a fit to the most sensitive observables in radiative pi+ p scattering, we obtain mu_Delta = 6.14 \pm 0.51 e/2m_p for the magnetic dipole moment of the Delta++.
Keywords
Cite
@article{arxiv.nucl-th/0006031,
title = {Determination of the Delta++ magnetic dipole moment},
author = {G. Lopez Castro and A. Mariano},
journal= {arXiv preprint arXiv:nucl-th/0006031},
year = {2008}
}
Comments
8 pages, latex Espcrc1.sty, 3 eps figures. Comments are added to the previous version