Formation of mesic nuclei by (γ,p) reactions

Abstract

We present a theoretical study on formation rates of ηand ωmeson-nucleus systems induced by (γ,p) reactions on nuclear targets at ideal recoilless condition. We find that the smaller distortion effect in the (γ,p) reaction enables us to investigate properties of the mesons created deeply inside nucleus more clearly. We also consider excitation of scalar-isoscalar (σ) mode in nucleus in order to investigate spectral enhancement around two-pion threshold caused by partial restoration of chiral symmetry. We conclude that valuable information of meson-nucleus interactions can be extracted from global structure of the missing mass spectra in the (γ,p) reaction.

38 pages, 3 tables, 12 figures, submitted to Nucl.Phys.A, minor corrections, added several references

References in corpus (6)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• First observation of in-medium modifications of the omega meson
• Experimental Signature of Medium Modifications for rho and omega Mesons in the 12 GeV p + A Reactions
• Photoproduction of eta-mesic 3He
• eta-Nucleon Scattering Length and Effective Range uncertainties
• eta-Nucleus interactions and in-medium properties of N*(1535) in chiral models

Cited by in corpus (26)

• Hadron properties in the nuclear medium
• Meson-nucleus potentials and the search for meson-nucleus bound states
• Eta bound states in nuclei: a probe of flavour-singlet dynamics
• η- and η'-mesic nuclei and U_A(1) anomaly at finite density
• Formation of eta-prime(958)-mesic nuclei by (p,d) reaction
• Nuclear bound state of eta'(958) and partial restoration of chiral symmetry in the eta' mass
• In--Flight ($K^{-},p$) Reactions for the Formation of Kaonic Atoms and Kaonic Nuclei in Green function method
• 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
• Casimir effect for nucleon parity doublets
• Study of possible ωbound states in nuclei with the (γ,p) reaction
• Isospin Properties of ($K^{-}$, $N$) Reactions for the Formation of Deeply-bound Antikaonic Nuclei
• Formation spectra of light kaonic nuclei by in-flight ($\bar{K},N$) reactions with chiral unitary amplitude
• Experimental constraints on the $\omega$-nucleus real potential
• $\eta$-nucleus interaction from the $d+d$ reaction around the $\eta$ production threshold
• $\eta$-meson in nuclear matter
• Formation spectra of charmed meson--nucleus systems using an antiproton beam
• Interference and nuclear medium effects on the eta-mesic nuclear spectrum
• Resonance-like structure near the $\eta d$ threshold in the $\gamma d${$\to$}${\pi }^0\eta d$ reaction
• Eta-mesic nuclei in relativistic mean-field theory
• Formation of Deeply Bound Kaonic Atoms in (K^-,N) Reactions
• Coherent photoproduction of the neutral pion and eta meson on the deuteron at incident energies below 1.15 GeV
• Spectral function of the ${\eta }^{\prime }$ meson in nuclear medium based on phenomenological models
• Formation of Heavy Meson Bound States by Two Nucleon Pick-up Reactions
• Mesons in Nuclei and Partial Restoration of Chiral Symmetry
• Recent topics of mesic atoms and mesic nuclei -- $\varphi$ mesic nuclei exist ?--