Photoproduction of $\eta$-mesons off C and Cu nuclei for photon energies below 1.1 GeV

Abstract

The $\eta$-meson photoproduction cross sections have been measured on the C and Cu targets for the photon energies between 600 and 1100 MeV to investigate the behavior of the $S_{11}$(1535) resonance in a nucleus. The excitation functions of the cross section as well as the angular and momentum distributions of $\eta$-mesons are in quantitative agreement with the Quantum Molecular Dynamics (QMD) model calculations in which the $\eta$-meson emission processes other than the $S_{11}$(1535) resonance are also incorporated as proposed in the $\eta$-MAID model. It is shown that the excitation of the $D_{15}$(1675) resonance might play an important role for $E_{\gamma }>900$ MeV.

16 pages 4 figures, submitted to Phys. Lett. B

References in corpus (19)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• A unitary isobar model for pion photo- and electroproduction on the proton up to 1 GeV
• Low-mass e+e- pair production in 158 A GeV Pb-Au collisions at the CERN SPS, its dependence on multiplicity and transverse momentum
• Enhanced Production of Low-Mass Electron Pairs in 40 AGeV Pb-Au Collisions at the CERN SPS
• Photoproduction of eta mesons off protons for photon energies from 0.75 GeV to 3 GeV
• An isobar model for eta photo- and electroproduction on the nucleon
• Photo- and Electroproduction of Eta Mesons
• The e p -> e' p eta reaction at and above the S11(1535) baryon resonance
• Hadronic Spectral Functions in Nuclear Matter
• Differential cross section measurement of eta photoproduction on the proton from threshold to 1100 MeV
• Electroproduction of the S11(1535) Resonance at High Momentum Transfer
• Chiral Symmetry Realization for Even- and Odd-parity Baryon Resonances
• Chiral Symmetry for Positive and Negative Parity Nucleons
• Quark Model Study of The eta Photoproduction: Evidence for a New S11 Resonance?
• Charged pions from Ni on Ni collisions between 1 and 2 AGeV
• In-medium properties of the D13(1520) nucleon resonance
• Properties of $N^{\ast }$(1535) at Finite Density in the Extended Parity-Doublet Models
• In-medium modifications of the S11(1535) resonance and eta photoproduction
• In-medium Effects in the Eta-Photoproduction through the $S_{11}$ Resonance with the Relativistic Approach

Cited by in corpus (10)

• Meson-nucleus potentials and the search for meson-nucleus bound states
• Photoproduction of mesons off nuclei
• Level crossing of particle-hole and mesonic modes in eta mesic nuclei
• Formation of eta-mesic nuclei by (pi,N) reaction and N^*(1535) in medium
• Photoproduction of eta-mesons off nuclei for Eg < 2.2 GeV
• Search for ${\eta }^{\prime }$ bound nuclei in the ${}^{12}\mathrm{C}(\gamma ,p)$ reaction with simultaneous detection of decay products
• Coherent photoproduction of the neutral pion and eta meson on the deuteron at incident energies below 1.15 GeV
• In-Medium Properties of Hadrons
• Inclusive Photoproduction of $\eta$ Mesons on Nuclei and the in-medium properties of the S${}_{11}$ Resonance
• Hadrons in Nuclei: Experiments and Perspectives