Further evidence for N(1900)P_{13} from photoproduction of hyperons

Abstract

We report further evidence for $N(1900)P_{13}$ from an analysis of a large variety of photo- and pion-induced reactions, in particular from the new CLAS measurements of double polarization observables for photoproduction of hyperons. The data are consistent with two classes of solutions both requiring contributions from $N(1900)P_{13}$ but giving different $N(1900)P_{13}$ pole positions. $(M-i\Gamma /2)=(1915\pm 50)-i(90\pm 25)$ MeV covers both solutions. The small elasticity of 10% or less explains why it was difficult to observe the state in $\pi N$ elastic scattering. $N(1900)P_{13}$ is a 2-star resonance which is predicted by symmetric three-quark models. In diquark-quark models, the existence of the state is not expected.

13 pages, 3 figures

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• Baryon resonances and polarization transfer in hyperon photoproduction
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Cited by in corpus (14)

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• Baryon resonances and polarization transfer in hyperon photoproduction
• Photoproduction of $\eta$ mesons off neutrons from a deuteron target
• P-wave excited baryons from pion- and photo-induced hyperon production
• Origin of the second peak in the cross section of the $K^{+}\Lambda$ photoproduction
• Electromagnetic production of $K\Sigma$ on the nucleon near threshold
• Separated Structure Functions for Exclusive $K^{+}\Lambda$ and $K^{+}{\Sigma }^0$ Electroproduction at 5.5 GeV with CLAS
• Scaling and Resonances in Elementary K^+ Lambda Photoproduction
• $N^{\ast }$ resonances from $K\Lambda$ amplitudes in sliced bins in energy
• Theory introduction to baryon spectroscopy
• Delta resonances, quark models, chiral symmetry and AdS/QCD
• Photon induced K$\Lambda$ production on the proton in the low energy region
• Quartet of spin-3/2 baryons in chiral multiplet $(1,1/2)\oplus (1/2,1)$ with mirror assignment