Strange Decays of Nonstrange Baryons

Abstract

The strong decays of excited nonstrange baryons into the final states Lambda K, Sigma K, and for the first time into Lambda(1405) K, Lambda(1520) K, Sigma(1385) K, Lambda K*, and Sigma K*, are examined in a relativized quark pair creation model. The wave functions and parameters of the model are fixed by previous calculations of N pi and N pi pi, etc., decays. Our results show that it should be possible to discover several new negative parity excited baryons and confirm the discovery of several others by analyzing these final states in kaon production experiments. We also establish clear predictions for the relative strengths of certain states to decay to Lambda(1405) K and Lambda(1520) K, which can be tested to determine if a three-quark model of the Lambda(1405) K is valid. Our results compare favorably with the results of partial wave analyses of the limited existing data for the Lambda K and Sigma K channels. We do not find large Sigma K decay amplitudes for a substantial group of predicted and weakly established negative-parity states, in contrast to the only previous work to consider decays of these states into the strange final states Lambda K and Sigma K.

25 pages, 8 figures, RevTeX

Cited by in corpus (122)

• 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
• Evidence for a missing nucleon resonance in kaon photoproduction
• Hyperon Photoproduction in the Nucleon Resonance Region
• The gamma + p to K+ + Lambda and gamma + p to K+ + Sigma0 reactions at forward angles with photon energies from 1.5 to 2.4 GeV
• Study of Non-Strange Baryon Resonances with Meson Photoproduction
• First Measurement of Beam-Recoil Observables Cx and Cz in Hyperon Photoproduction
• Mass and $K\Lambda$ coupling of $N^{\ast }(1535)$
• Comment on "Mass and K Lambda coupling of N*(1535)"
• Beam polarization asymmetries for the p(gamma,K+)Lambda and p(gamma,K+)Sigma0 reactions at Egamma=1.5-2.4 GeV
• Decays of Baryon Resonances into K Lambda, K^+ Sigma^0 and K^0 Sigma^+
• Kaon photoproduction: background contributions, form factors and missing resonances
• A coupled-channel analysis of $K\Lambda$ production in the nucleon resonance region
• Photoproduction of Lambda(1405) and Sigma^{0}(1385) on the proton at E_γ= 1.5-2.4 GeV
• Semileptonic Decays of Heavy Lambda Baryons in a Quark Model
• Measurement of the reaction gamma p --> K0 Sigma+ at photon energies up to 2.6 GeV
• Strange and nonstrange baryon spectra in the relativistic interacting quark-diquark model with a Gürsey and Radicati-inspired exchange interaction
• eta-photoproduction in the resonance energy region
• 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
• Eta-meson production in the resonance energy region
• Multichannel parametrization of πN scattering amplitudes and extraction of resonance parameters
• Quasifree Kaon Photoproduction on Nuclei
• Nucleon and Delta resonances in K Sigma(1385) photoproduction from nucleons
• Kaon photoproduction in a multipole approach
• Differential cross section and photon beam asymmetry for the gamma n -> K+ Sigma- reaction at Egamma=1.5-2.4 GeV
• First Measurement of Transferred Polarization in the Exclusive e p --> e' K+ Lambda Reaction
• Mechanisms for ${\chi }_{cJ}\to \varphi \varphi$ Decays
• Separated Structure Functions for the Exclusive Electroproduction of $K^{+}\Lambda$ and $K^{+}{\Sigma }^0$ Final States
• $K^{+}\Lambda$ and $K^{+}{\Sigma }^0$ photoproduction with fine center-of-mass energy resolution
• Nucleon resonance decay by the $K^0{\Sigma }^{+}$ channel
• Photoproduction of $\Lambda$ and ${\Sigma }^0$ hyperons using linearly polarized photons
• Contribution of higher nucleon resonances to K*Λ photoproduction
• Light Baryon Spectroscopy
• Combined analysis of eta' production reactions: gamma N -> eta' N, N N -> N N eta', and pi N -> eta' N
• Near-threshold Lambda(1520) production by the gamma p -> K+Lambda(1520) reaction at forward K+ angles
• Photoproduction Reactions and Non-Strange Baryon Spectroscopy
• Regge-plus-resonance treatment of the p(gamma,K^+)Sigma^0 and p(gamma,K^0)Sigma^+ reactions at forward kaon angles
• Coupled-channel study of gamma p --> K+ Lambda
• A Genetic Algorithm Analysis of N* Resonances in $p(\gamma ,K^{+})\Lambda$ Reactions
• K* photoproduction off the nucleon: gamma N --> K* Lambda
• K^0 pi^0 Sigma^+ and K^*0 Sigma^+ photoproduction off the proton
• Analyzing eta' photoproduction data on the proton at energies of 1.5--2.3 GeV
• Scalar kappa meson in K* photoproduction
• The role of the $N^{\ast }(2080)$ resonance in the $\vec{\gamma }p\to K^{+}\Lambda (1520)$ reaction
• Possible $\Sigma ({\frac{1}{2}}^{-})$ under the ${\Sigma }^{\ast }(1385)$ peak in $K{\Sigma }^{\ast }$ photoproduction
• 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
• Strong decays of baryons and missing resonances
• Diffractive Exclusive Photon Production in Deep Inelastic Scattering
• Open-flavor strong decays of open-charm and open-bottom mesons in the ${}^3{P}_0$ model
• Production of Lambda and Sigma^0 hyperons in proton-proton collisions
• Polarized Structure Function ${\sigma }_{L{T}^{\prime }}$ for $p(\vec{e},e^{\prime }{K}^{+})\Lambda$ in the Nucleon Resonance Region
• Electroproduction of kaons from the proton in a Regge-plus-resonance approach
• 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
• Cross Sections and Beam Asymmetries for K+ Sigma*- photoproduction from the deuteron at 1.5-2.4 GeV
• The internal structures of the nucleon resonances $N(1875)$ and $N(2120)$
• Study of $\eta$ photoproduction on the proton in a chiral constituent quark approach via one-gluon-exchange model
• Quark model predictions for $K^{\ast }$ photoproduction on the proton
• Cross Sections for the $\gamma p\to K^{\ast 0}{\Sigma }^{+}$ Reaction at $E_{\gamma }=1.7-3.0$ GeV
• Hadronic decays of mesons and baryons in the Dyson-Schwinger approach
• Backward-angle photoproduction of eta meson from protons at E_gamma = 1.6 - 2.4 GeV
• The roles of nucleon resonances in $\Lambda$(1520) photoproduciton off proton
• Re-analysis of the $\Lambda (1520)$ photoproduction reaction
• Lambda(1520) photoproduciton off the proton target with Regge contributions
• Sigma photoproduction in the resonance region
• Measurement of the $\vec{\gamma }p\to K^{+}\Lambda$ Reaction at Backward Angles
• Updated determination of $N^{\ast }$ resonance parameters using a unitary, multichannel formalism
• Dynamical coupled-channel model of kaon-hyperon interactions
• Measurement of the Differential and Total Cross Sections of the $\gamma d\to K^0\Lambda (p)$ Reaction within the Resonance Region
• Decay behavior of the strange and beauty partners of $P_c$ hadronic molecules
• Strong decay of low-lying $S_{11}$ and $D_{13}$ nucleon resonances to pseudoscalar mesons and octet baryons
• Effects of $\Delta (1905)5/2^{+}$ on $K^{\ast }\Sigma$ photoproduction
• Spectroscopy of light $N^{\ast }$ baryons
• Photoproduction of $\Lambda (1405)$ with the $N^{\ast }$ and $t$-channel Regge contributions
• Consistent analysis of the reaction $\gamma p\to p{\eta }^{\prime }$ and $pp\to pp{\eta }^{\prime }$
• Relativistic quark-diquark model of baryons with a spin-isospin transition interaction
• Effects of $N(2000)5/2^{+}$, $N(2060)5/2^{-}$, $N(2120)3/2^{-}$, and $N(2190)7/2^{-}$ on $K^{\ast }\Lambda$ photoproduction
• Electroproduction of the $\Lambda (1520)$ hyperon
• Separated Structure Functions for Exclusive $K^{+}\Lambda$ and $K^{+}{\Sigma }^0$ Electroproduction at 5.5 GeV with CLAS
• The $\Sigma$(1385) photoproduciton from proton within a Regge-plus-resonance approach
• Energy-independent PWA of the reaction $\gamma p\to K^{+}\Lambda$
• Theoretical study of the $\Lambda$(1520) photoproduction off proton target based on the new CLAS data
• Backward-angle photoproduction of ${\pi }^0$ mesons on the proton at $E_{\gamma }$ = 1.5--2.4 GeV
• K*Sigma photoproduction off the proton target with baryon resonances
• Covariant calculation of nonstrange decays of strange baryon resonances
• Coupling strength of the $N^{\ast }(1535)S_{11}$ to the $K^{+}\Lambda$ channel
• New fits to the reaction $\gamma p\to K^{+}\Lambda$
• Analysis of recent CLAS data on ${\Sigma }^{\ast }(1385)$ photoproduction off a neutron target
• Scaling and Resonances in Elementary K^+ Lambda Photoproduction
• $2\pi$ production in the Giessen coupled-channel model
• Role of the ${\Delta }^{\ast }(1940)$ in the ${\pi }^{+}p\to K^{+}{\Sigma }^{+}(1385)$ and $pp\to n{K}^{+}{\Sigma }^{+}(1385)$ reactions
• $N^{\ast }$ resonances from $K\Lambda$ amplitudes in sliced bins in energy
• Covariant calculation of strange decays of baryon resonances
• Partial-Wave Analysis of $\gamma p\to K^{+}\Lambda$ using a multichannel framework
• Nucleon and $\Delta$ resonances in $\gamma p\to K^{+}{\Sigma }^0(1385)$ photoproduction
• Studies on the polarization transfer coefficients C_x and C_z in the gamma p -> K^+ Lambda(1520,3/2^-) reaction process
• $K^0\Lambda$ photoproduction off the neutron with nucleon resonances
• Possible ${\Sigma }^{\ast }(1/2^{-})$ in the initial-state polarized $\gamma N\to K^{+}{\Sigma }^{\ast }(1385)\to K^{+}\pi \Lambda$ reaction near threshold
• Beam-Recoil Transferred Polarization in $K^{+}Y$ Electroproduction in the Nucleon Resonance Region with CLAS12
• Quarks, diquarks and QCD mixing in the $N^{\ast }$ resonance spectrum
• Beam-Target Helicity Asymmetry $E$ in $K^0\Lambda$ and $K^0{\Sigma }^0$ Photoproduction on the Neutron
• Photoproduction of pi0 omega off protons for E(gamma) < 3 GeV
• Effects of $N(2000){5/2}^{+}$ on $\gamma p\to K^{+}\Lambda (1405)$
• Evidence for the fourth P11 resonance predicted by the constituent quark model
• Decay patterns of low-lying $N_{s\bar{s}}$ states to the strangeness channels
• Effects of nucleon resonances on $\eta$ photoproduction off the neutron reexamined
• Electroproduction of $\Lambda (1520)$ off the nucleon target with the nucleon resonances
• Open flavor strong decays
• Hyperon Photo and Electro Production at CLAS
• Study of Baryon Resonances in the Photoproduction gamma p ---> K* Sigma(1190)
• The role of $N^{\ast }(2120)$ nucleon resonance in $K\Lambda (1520)$ photon and hadronic productions
• Theoretical investigation of the decay of the $N(2120)$ resonance to nucleon resonances near 1.7 GeV
• K+ photoproduction at SPring-8/LEPS
• Contribution of N* and Delta* resonances in K* Sigma(1190) photoproduction
• The baryon spectroscopy: strong decays and strange suppression
• K*Lambda(1116) photoproduction and nucleon resonances
• Nucleon Resonances Near 2 GeV
• Electroproduction of K* mesons at CLAS
• Angular Distributions, Polarization Observables, Spin Density Matrices and Statistical Tensors in Photoproduction of Two Pseudoscalar Mesons off a Nucleon
• $K^0\Lambda$ Photoproduction with Nucleon Resonances