A new resonance in K+Lambda electroproduction: the D_{13}(1895) and its electromagnetic form factors
Abstract
New SAPHIR p(gamma,K+)Lambda total cross section data show a resonance structure at a total c.m. energy around 1900 MeV. We investigate this feature with an isobar model and find that the structure can be well explained by including a new D_{13} resonance at 1895 MeV. Such a state has been predicted by a relativistic quark model at 1960 MeV with significant gamma-N and K-Lambda branching ratios. We demonstrate how the measurement of single and double polarization observables can be used to obtain additional information on this resonance. Using recent (e,e'K+) JLab data from Hall C we extract the electromagnetic form factors of this state.
Keywords
Cite
@article{arxiv.nucl-th/9909022,
title = {A new resonance in K+Lambda electroproduction: the D_{13}(1895) and its electromagnetic form factors},
author = {C. Bennhold and H. Haberzettl and T. Mart},
journal= {arXiv preprint arXiv:nucl-th/9909022},
year = {2007}
}
Comments
10 pages, 7 eps-figures, invited talk at the 2nd ICTP International Conference on Perspectives in Hadronic Physics, Trieste, Italy, 10-14 May 1999