P-wave excited baryons from pion- and photo-induced hyperon production

Abstract

We report evidence for $N(1710)P_{11}$, $N(1875)P_{11}$, $N(1900)P_{13}$, $\Delta (1600)P_{33}$, $\Delta (1910)P_{31}$, and $\Delta (1920)P_{33}$, and find indications that $N(1900)P_{13}$ might have a companion state at 1970\,MeV. The controversial $\Delta (1750)P_{31}$ is not seen. The evidence is derived from a study of data on pion- and photo-induced hyperon production, but other data are included as well. Most of the resonances reported here were found in the Karlsruhe-Helsinki (KH84) and the Carnegie-Mellon (CM) analyses but were challenged recently by the Data Analysis Center at GWU. Our analysis is constrained by the energy independent $\pi N$ scattering amplitudes from either KH84 or GWU. The two $\pi N$ amplitudes from KH84 or GWU, respectively, lead to slightly different $\pi N$ branching ratios of contributing resonances but the debated resonances are required in both series of fits.

arXiv comment22 pages, 28 figures. Some additional sets of data are added

References in corpus (93)

• Unitary Isobar Model - MAID2007
• Extended Partial-Wave Analysis of piN Scattering Data
• Baryon spectroscopy
• SU(3) Chiral Dynamics with Coupled Channels: Eta and Kaon Photoproduction
• Differential Cross Sections for gamma + p --> K+ + Y for Lambda and Sigma0 Hyperons
• Measurement of gamma p --> K+ Lambda and gamma p --> K+ Sigma0 at photon energies up to 2.6 GeV
• What is the structure of the Roper resonance?
• Evidence for a missing nucleon resonance in kaon photoproduction
• Analysis of Pion Photoproduction Data
• Nonperturbative QCD Coupling and its $\beta$ function from Light-Front Holography
• Hyperon Photoproduction in the Nucleon Resonance Region
• Photon- and meson-induced reactions on the nucleon
• Analytic properties of the scattering amplitude and resonances parameters in a meson exchange model
• Baryon Resonance Extraction from piN Data using a Unitary Multichannel Model
• Differential cross section and recoil polarization measurements for the gamma p to K+ Lambda reaction using CLAS at Jefferson Lab
• First Measurement of Beam-Recoil Observables Cx and Cz in Hyperon Photoproduction
• Vector meson production and nucleon resonance analysis in a coupled-channel approach for energies m_N < sqrt(s) < 2 GeV I: pion-induced results and hadronic parameters
• A unitary model for meson-nucleon scattering
• Vector meson production and nucleon resonance analysis in a coupled-channel approach for energies m_N < sqrt(s) < 2 GeV II: photon-induced results
• Dispersion Relation Constrained Partial Wave Analysis of piN Elastic and piN\to\etaN Scattering Data: The Baryon Spectrum
• Photoproduction of eta mesons off protons for photon energies from 0.75 GeV to 3 GeV
• Disentangling the dynamical origin of P11 Nucleon Resonances
• Determination of the E2/M1 Ratio in the γN \to Δ(1232) Transition from a Simultaneous Measurement of p(\vecγ,p)π^0 and p(\vecγ,π^+)n
• Beam polarization asymmetries for the p(gamma,K+)Lambda and p(gamma,K+)Sigma0 reactions at Egamma=1.5-2.4 GeV
• Photoproduction of $\eta$ and $\eta \prime$ Mesons off Protons
• Decays of Baryon Resonances into K Lambda, K^+ Sigma^0 and K^0 Sigma^+
• Dynamical Coupled-Channel Model of $\pi N$ Scattering in the W $\le$ 2 GeV Nucleon Resonance Region
• Partial wave decomposition of pion and photoproduction amplitudes
• pi N --> eta N and eta N --> eta N partial wave T-matrices in a coupled, three channel model
• Coupled-channel analysis of the $\omega$-meson production in $\pi N$ and $\gamma N$ reactions for c.m. energies up to 2 GeV
• Evidence that the Y(4660) is a f_0(980)psi' bound state
• New results on the Roper resonance and the P_{11} partial wave
• A coupled-channel analysis of $K\Lambda$ production in the nucleon resonance region
• ${\pi }^{+}$ photoproduction on the proton for photon energies from 0.725 to 2.875 GeV
• Differential cross sections for the reactions gamma p-> p eta and gamma p -> p eta-prime
• A reggeized model for eta and eta-prime photoproduction
• Measurement of eta photoproduction on the proton from threshold to 1500 MeV
• Photoproduction of Baryons Decaying into N pi and N eta
• Measurement of the reaction gamma p --> K0 Sigma+ at photon energies up to 2.6 GeV
• eta-photoproduction in the resonance energy region
• Dynamical coupled-channel approach to hadronic and electromagnetic production of kaon-hyperon on the proton
• ${\pi }^0$ photoproduction on the proton for photon energies from 0.675 to 2.875 GeV
• Dynamical Coupled-Channels Effects on Pion Photoproduction
• Measurement of beam-recoil observables Ox, Oz and target asymmetry for the reaction gamma p -> K Lambda
• Neutral pion photoproduction off protons in the energy range 0.3 GeV < E(gamma) < 3 GeV
• N* and Delta* decays into N pi0 pi0
• A gauge invariant chiral unitary framework for kaon photo- and electroproduction on the proton
• The reaction pi+ p --> K+ Sigma+ in a unitary coupled-channels model
• Baryon resonances and polarization transfer in hyperon photoproduction
• Partial decay widths of baryons in the spin-momentum operator expansion method
• Diquark correlations in baryon spectroscopy and holographic QCD
• The helicity amplitudes A${}_{1/2}$ and A${}_{3/2}$ for the D${}_{13}(1520)$ resonance obtained from the $\vec{\gamma }\vec{p}\to p{\pi }^0$ reaction}
• Study of the reaction $\gamma p\to p{\pi }^0\eta$
• Nucleon resonance decay by the $K^0{\Sigma }^{+}$ channel
• Further evidence for N(1900)P_{13} from photoproduction of hyperons
• The role of hyperon resonances in p(gamma,K+)Lambda processes
• The role of the background in the extraction of resonance contributions from meson-baryon scattering
• Photoproduction of pi0-mesons off protons from the Delta(1232) region to E(gamma) = 3 GeV
• Resonance Contributions to $\eta$ Photoproduction on Protons Found Using Dispersion Relations and an Isobar Model
• Regge-plus-resonance treatment of the p(gamma,K^+)Sigma^0 and p(gamma,K^0)Sigma^+ reactions at forward kaon angles
• Photoproduction of pions and properties of baryon resonances from a Bonn-Gatchina partial wave analysis
• Evidence for a parity doublet Delta(1920)P_{33} and Delta(1940)D_{33}$ from γp\to pπ^0η
• Coupled-channels study of the ${\pi }^{-}p\to \eta n$ process
• Photoproduction of eta meson within a coupled-channels K-matrix approach
• Nucleon resonances in πN scattering up to energies \sqrt(s) < 2.0 GeV
• Spin-5/2 resonance contributions to the pion-induced reactions for energies $\sqrt{s}⩽$2.0 GeV
• Excitation of S11 resonances in pion scattering and pion photoproduction on the proton
• Electroproduction of kaons from the proton in a Regge-plus-resonance approach
• Pion and photon couplings of N* resonances from scattering on the proton
• Singularity structure of the pi N scattering amplitude in a meson-exchange model up to energies W < 2.0 GeV
• Electromagnetic Couplings of Nucleon Resonances
• The associated photoproduction of K+ meson off proton within a coupled-channels K-matrix approach
• Light Baryon Resonances: Restrictions and Perspectives
• The piN --> etaN data demand the existence of N(1710) P11 resonance reducing the 1700 MeV continuum ambiguity
• Measurement of the Beam Asymmetry $\Sigma$ in the Forward Direction for pi0 Photoproduction
• Combined study of gamma p to eta p and pi-p to eta n in a chiral constituent quark approach
• Regge approach to charged-pion photoproduction at invariant energies above 2 GeV
• New fits to the reaction $\gamma p\to K^{+}\Lambda$
• Influence of spin-rotation measurements on partial-wave analyses of elastic pion-nucleon scattering
• Model-independent resonance parameter extraction using the trace of K and T matrices
• Resonance parameters from K-matrix and T-matrix poles
• Measurement of the Cross Section Asymmetry of the Reaction gp-->pi0p in the Resonance Energy Region Eg = 0.5 - 1.1 GeV
• Regge-plus-resonance predictions for kaon photoproduction from the neutron
• Backward pion photoproduction
• Backward pion-nucleon scattering
• Analysis of recent eta photoproduction data
• Extraction of the D13(1520) photon-decay couplings from pion- and eta-photoproduction data
• Channel coupling effects in $\rho$-meson photoproduction
• Dispersion relation analysis of neutral pion photo- and electroproduction at threshold using the MAID and SAID solutions
• Measurement of the Spin Rotation Parameter A in the Elastic Pion-proton Scattering at 1.43 GeV/c
• Measurements of spin rotation parameter A in pion-proton elastic scattering at 1.62 GeV/c
• Backward asymmetry measurements in the elastic pion-proton scattering at resonance energies
• Helicity-dependent photoabsorption cross sections on the nucleon

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• Photoproduction of $\Lambda$ and ${\Sigma }^0$ hyperons off protons with linearly polarized photons at $E_{\gamma }=1.5-3.0$ GeV
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• Evidence for a negative-parity spin-doublet of nucleon resonances at 1.88\,GeV
• Generalization of the model-independent Laurent-Pietarinen single-channel pole-extraction formalism to multiple channels
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• Reexamination of the role of the ${\Delta }^{\ast }$ resonances in the $pp\to n{K}^{+}{\Sigma }^{+}$ reaction
• The nucleon resonances in the $J/\psi \to p\bar{p}{\eta }^{\prime }$ decay
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• First Measurement of ${\Xi }^{-}$ Polarization in Photoproduction
• Spectrum of the excited $N^{\ast }$ and ${\Delta }^{\ast }$ baryons in a relativistic chiral quark model
• Measurement of Excited Hyperons in Photoproduction at CLAS
• Extraction of $t$-slopes from experimental $\gamma p\to K^{+}\Lambda$ and $\gamma p\to K^{+}{\Sigma }_0$ cross section data