1999/09/10 by C. Bennhold, Bennhold, C., H. Haberzettl +3 · 2 citations
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Magnetism in coordination complexes #Nuclear Theory (nucl-th) #Particle Accelerators and Free-Electron Lasers #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-th/9909022
10 pages, 7 eps-figures, invited talk at the 2nd ICTP International Conference on Perspectives in Hadronic Physics, Trieste, Italy, 10-14 May 1999
arxiv created 1999/09/10 · openalex publication_date 1999/09/10 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 D13 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.