Photoproduction of eta-mesons on the deuteron above S11(1535) in the presence of a narrow P11(1670) resonance

Abstract

Incoherent photoproduction of eta-mesons on the deuteron is considered. The main attention is paid to the region above the S11(1535) resonance where rather narrow resonance like structure in the total cross section extracted for gamma n -> eta n has been reported. The corresponding experimental results are analyzed from the phenomenological standpoint within the model containing a baryon P11 with the mass about 1670 MeV and a width less than 30 MeV. This resonance was suggested in some recent works as a nonstrange member of the pentaquark antidecuplet with J^P=1/2^+. The calculation is also performed for the polarized and nonpolarized angular distributions of $\eta$ mesons. In addition, we present our predictions for the cross sections of the neutral kaons and double pion photoproduction, where the same narrow P11(1670) resonance is assumed to contribute through the decay into K^0 Lambda and pi Delta configuration.

11 pages, 5 figures

References in corpus (2)

• Extended Partial-Wave Analysis of piN Scattering Data
• Dispersion Theory and the Low Energy Constants for Neutral Pion Photoproduction

Cited by in corpus (14)

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• Photoproduction of eta meson within a coupled-channels K-matrix approach
• Evidence for Narrow N*(1685) Resonance in Quasifree Compton Scattering on the Neutron
• Insight into the narrow structure in {\boldmath{$\eta$}}-photoproduction on the neutron from helicity dependent cross sections
• Evidence for the J^p=1/2^+ narrow state at 1650 MeV in the photoproduction of KLambda
• Evidence for narrow resonant structures at $W\approx 1.68$ and $W\approx 1.72$ GeV in real Compton scattering off the proton
• Axial-vector transitions and strong decays of the baryon antidecuplet in the self-consistent SU(3) chiral quark-soliton model
• Vector transition form factors of the $N{K}^{\ast }\to {\Theta }^{+}$ and $N{\bar{K}}^{\ast }\to {\Sigma }_{\overline{10}}^{\ast -}$ in the SU(3) chiral quark-soliton model
• Final remarks to our study of $\eta$-photoproduction on protons in the resonance region
• A new candidate for non-strangeness pentaquarks: N*(1675)
• Magnetic and axial-vector transitions of the baryon antidecuplet