Combined study of gamma p to eta p and pi-p to eta n in a chiral constituent quark approach

Abstract

Within a chiral constituent quark model approach, $\eta$-meson production on the proton {\it via} electromagnetic and hadron probes are studied. With few parameters, differential cross-section and polarized beam asymmetry for γp \to ηp$anddifferentialcrosssectionfor$π^- p\to ηn$processesarecalculatedandsuccessfullycomparedwiththedatainthecenter-of-massenergyrangefromthresholdupto2GeV.Thefiveknownresonances$S_{11}(1535)$,$S_{11}(1650)$,$P_{13}(1720)$,$D_{13}(1520)$,and$F_{15}(1680)$arefoundtobedominantinthereactionmechanismsinbothchannels.Possiblerolesplaiedbynewresonancesarealsoinvestigatedandinthephotoproductionchannel,significantcontributionfrom$S_{11}$-and$D_{15}$-resonances,withmassesaround1715MeVand2090MeV,respectively,arededuced.Fortheso-calledmissingresonances,noevidenceisfoundwithintheinvestigatedreactions.Thehelicityamplitudesanddecaywidthsof$N^* \to πN, ηN$ are also presented, and found consistent with the PDG values.

23 pages,5 figures

References in corpus (24)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• 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
• 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 beam asymmetry in eta-photoproduction off the proton
• Dynamical coupled-channel approach to hadronic and electromagnetic production of kaon-hyperon on the proton
• Lattice QCD determination of patterns of excited baryon states
• Observation of Two New N* Peaks in J/psi -> $pp{i}^{-}\bar{n}$ and $\bar{p}{\pi }^{+}n$ Decays
• Coupled-channels study of the ${\pi }^{-}p\to \eta n$ process
• Spin-5/2 resonance contributions to the pion-induced reactions for energies $\sqrt{s}⩽$2.0 GeV
• Study of π^{-}p \to ηn at low energies in a chiral constituent quark model
• Study of $\eta$ photoproduction on the proton in a chiral constituent quark approach via one-gluon-exchange model
• Dynamical coupled-channel model of kaon-hyperon interactions
• New Narrow Nucleon N*(1685)
• Strangeness in the proton and N*(1535)
• Search for missing baryon resonances via associated strangeness photoproduction
• Chiral constituent quark model study of the process $\gamma p\to \eta p$
• Excited decuplet baryons from QCD sum rules
• The Hadron Spectrum from Lattice QCD
• Recent Results on J/ψDecays from BESII
• Results from the Analysis of Crystal Ball Meson Production Measurements at BNL
• Insights into the pi- p -> eta n reaction mechanism

Cited by in corpus (21)

• Charmonium spectrum and their electromagnetic transitions with higher multipole contributions
• Understanding the newly observed ${\Omega }_c$ states through their decays
• Strong and radiative decays of the doubly charmed baryons
• Spectrum and electromagnetic transitions of bottomonium
• $\Omega$ baryon spectrum and their decays in a constituent quark model
• Pion- and photo-induced transition amplitudes to $\Lambda K$, $\Sigma K$, and $N\eta$
• Triply charmed and bottom baryons in a constituent quark model
• P-wave excited baryons from pion- and photo-induced hyperon production
• $\eta$ photoproduction on the quasi-free nucleons in the chiral quark model
• ${\eta }^{\prime }$ photoproduction on the nucleons in the quark model
• The roles of nucleon resonances in $\Lambda$(1520) photoproduciton off proton
• Theoretical study of the $\Lambda$(1520) photoproduction off proton target based on the new CLAS data
• Neutral pion photoproduction on the nucleon in a chiral quark model
• $\eta$ production off the proton in a Regge-plus-chiral quark approach
• A chiral quark model for meson electro-production in the S11 partial wave
• Possible molecular states from the $N\Delta$ interaction
• Eta and kaon production in a chiral quark model
• Combined analysis of the ${\pi }^{-}p\to K^0\Lambda$, $\eta n$ reactions in a chiral quark model
• Configuration Mixing of Quark States in Baryons
• Quark model study of the $\pi N\to \pi N$ reactions up to the $N(1440)$ resonance region
• Exploration of hyperfine interaction between constituent quarks via eta productions