Decays of Baryon Resonances into K Lambda, K^+ Sigma^0 and K^0 Sigma^+

Abstract

Cross sections, beam asymmetries, and recoil polarisations for the reactions gamma p to K^+ Lambda ; gamma to K^+ Sigma^0, and gamma p to K^0 Sigma^+ have been measured by the SAPHIR, CLAS, and LEPS collaborations with high statistics and good angular coverage for centre-of-mass energies between 1.6 and 2.3 GeV. The combined analysis of these data with data from pi and eta photoproduction reveals evidence for new baryon resonances in this energy region. A new P_{11} state with mass 1840 MeV and width 140 MeV was observed contributing to most of the fitted reactions. The data demand the presence of two D_{13} states at 1870 and 2170 MeV.

12 pages, 16 figures

References in corpus (8)

• Partial wave decomposition of pion and photoproduction amplitudes
• Measurement of the reaction gamma p --> K0 Sigma+ at photon energies up to 2.6 GeV
• Neutral pion photoproduction off protons in the energy range 0.3 GeV < E(gamma) < 3 GeV
• Eta photoproduction off the neutron at GRAAL: Evidence for a resonant structure at W=1.67 GeV
• Dynamical coupled-channel study of K+ Lambda photoproduction
• K-Lambda and K-Sigma photoproduction in a coupled channels framework
• Missing Resonances in Kaon Photoproduction on the Nucleon
• Role of the baryon resonances in the eta and K+ photoproduction processes on the proton

Cited by in corpus (80)

• Baryon spectroscopy
• Properties of baryon resonances from a multichannel partial wave analysis
• Differential Cross Sections for gamma + p --> K+ + Y for Lambda and Sigma0 Hyperons
• Dynamical coupled-channel model of meson production reactions in the nucleon resonance region
• Sigma_c Dbar and Lambda_c Dbar states in a chiral quark model
• Coupled-channel dynamics in the reactions piN --> piN, etaN, KLambda, KSigma
• Analytic properties of the scattering amplitude and resonances parameters in a meson exchange 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
• New results on the Roper resonance and the P_{11} partial wave
• Measurement of eta photoproduction on the proton from threshold to 1500 MeV
• Dynamical coupled-channel approach to hadronic and electromagnetic production of kaon-hyperon on the proton
• Differential cross sections and recoil polarizations for the reaction gamma p -> K+ Sigma0
• Forward-angle K+ Lambda photoproduction in a Regge-plus-resonance approach
• Dynamical Coupled-Channels Effects on Pion Photoproduction
• Measurement of beam-recoil observables Ox, Oz and target asymmetry for the reaction gamma p -> K Lambda
• A gauge invariant chiral unitary framework for kaon photo- and electroproduction on the proton
• N* and Delta* decays into N pi0 pi0
• The reaction pi+ p --> K+ Sigma+ in a unitary coupled-channels model
• Anomaly in the K^0_S Sigma^+ photoproduction cross section off the proton at the K* threshold
• Pion photoproduction in a dynamical coupled-channels model
• Partial decay widths of baryons in the spin-momentum operator expansion method
• Baryon resonances and polarization transfer in hyperon photoproduction
• Separated Structure Functions for the Exclusive Electroproduction of $K^{+}\Lambda$ and $K^{+}{\Sigma }^0$ Final States
• Study of the reaction $\gamma p\to p{\pi }^0\eta$
• The role of vector-baryon channels and resonances in the $\gamma p\to K^0{\Sigma }^{+}$ and $\gamma n\to K^0{\Sigma }^0$ reactions near the $K^{\ast }\Lambda$ threshold
• Nucleon resonance decay by the $K^0{\Sigma }^{+}$ channel
• Further evidence for N(1900)P_{13} from photoproduction of hyperons
• 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
• Regge-plus-resonance treatment of the p(gamma,K^+)Sigma^0 and p(gamma,K^0)Sigma^+ reactions at forward kaon angles
• Photoproduction of $\eta$ mesons off neutrons from a deuteron target
• Photoproduction of pions and properties of baryon resonances from a Bonn-Gatchina partial wave analysis
• The impact of ${\mathbf{K}}^{+}\mathbf{\Lambda }$ photoproduction on the resonance spectrum
• 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
• K^0 pi^0 Sigma^+ and K^*0 Sigma^+ photoproduction off the proton
• Beam-Recoil Polarization Transfer in the Nucleon Resonance Region in the Exclusive $\vec{e}p\to e^{\prime }{K}^{+}\vec{\Lambda }$ and $\vec{e}p\to e^{\prime }{K}^{+}{\vec{\Sigma }}^0$ Reactions at CLAS
• P-wave excited baryons from pion- and photo-induced hyperon production
• Production of Lambda and Sigma^0 hyperons in proton-proton collisions
• Partial decay widths of baryons in the spin-momentum operator expansion method
• Electroproduction of kaons from the proton in a Regge-plus-resonance approach
• Polarized Structure Function ${\sigma }_{L{T}^{\prime }}$ for $p(\vec{e},e^{\prime }{K}^{+})\Lambda$ in the Nucleon Resonance Region
• Influence of N*-resonances on hyperon production in the channel pp->K+ Lambda p at 2.95, 3.20 and 3.30 GeV/c beam momentum
• Nucleon resonances in the fourth resonance region
• Differential cross section of gamma n to K+ Sigma- on bound neutrons with incident photons from 1.1 to 3.6 GeV
• Origin of the second peak in the cross section of the $K^{+}\Lambda$ photoproduction
• Coupled-channel analysis of $K\Sigma$ production on the nucleon up to 2.0 GeV
• Study of $\eta$ photoproduction on the proton in a chiral constituent quark approach via one-gluon-exchange model
• Baryon Resonance Analysis from SAID
• The associated photoproduction of K+ meson off proton within a coupled-channels K-matrix approach
• Strong decay of low-lying $S_{11}$ and $D_{13}$ nucleon resonances to pseudoscalar mesons and octet baryons
• Separated Structure Functions for Exclusive $K^{+}\Lambda$ and $K^{+}{\Sigma }^0$ Electroproduction at 5.5 GeV with CLAS
• Combined study of gamma p to eta p and pi-p to eta n in a chiral constituent quark approach
• Energy-independent PWA of the reaction $\gamma p\to K^{+}\Lambda$
• Backward-angle photoproduction of ${\pi }^0$ mesons on the proton at $E_{\gamma }$ = 1.5--2.4 GeV
• Experimental study of the $\gamma p\to K^0{\Sigma }^{+}$, $\gamma n\to K^0\Lambda$, and $\gamma n\to K^0{\Sigma }^0$ reactions at the Mainz Microtron
• Photoproduction of $\Lambda$ and ${\Sigma }^0$ hyperons off protons with linearly polarized photons at $E_{\gamma }=1.5-3.0$ GeV
• Coupled $K^{+}\Lambda$ and $K^0\Lambda$ photoproduction off the nucleon: Consequences from the recent CLAS and MAMI data and the $N(1680)P_{11}$ narrow state
• Coupling strength of the $N^{\ast }(1535)S_{11}$ to the $K^{+}\Lambda$ channel
• New fits to the reaction $\gamma p\to K^{+}\Lambda$
• Scaling and Resonances in Elementary K^+ Lambda Photoproduction
• Are hyperon resonances required in the elementary $K^{+}\Lambda$ photoproduction?
• Evidence for a negative-parity spin-doublet of nucleon resonances at 1.88\,GeV
• $\eta$ production off the proton in a Regge-plus-chiral quark approach
• Photo-production of neutral kaons on 12C in the threshold region
• Searching for the quark--diquark systematics of baryons composed by light quarks $q=u,d$
• Nucleon resonances in the $\gamma p\to \varphi K^{+}\Lambda$ reaction near threshold
• The pK0Σ+ final state in proton-proton collisions
• Photoproduction of $K^{+}\Lambda$ with a Regge-plus-resonance model
• Chiral constituent quark model study of the process $\gamma p\to \eta p$
• Nucleon resonances in the ${\pi }^{-}p\to K^0\Lambda$ reaction near threshold
• Delta resonances, quark models, chiral symmetry and AdS/QCD
• Ridge regression for minimizing the couplings of hyperon resonances in the $K^{+}\Lambda$ photoproduction
• Gerasimov-Drell-Hearn Sum Rule and the Discrepancy between the New CLAS and SAPHIR Data
• Configuration Mixing of Quark States in Baryons
• Hyperon Photo and Electro Production at CLAS
• Exploration of hyperfine interaction between constituent quarks via eta productions
• Physics at ELSA
• Baryon spectroscopy with polarization observables from CLAS