$\eta$ and ${\eta }^{\prime }$ mesons in nuclear matter and nuclei

Abstract

We present updated and extended results for the $\eta$- and ${\eta }^{\prime }$-nucleus bound state energies, obtained by solving the Schrödinger and Klein-Gordon equations with complex optical potentials, for a wide range of nuclei. The $\eta$ and ${\eta }^{\prime }$ nuclear potentials are obtained in the local density approximation from the mass shift of these mesons in nuclear matter, which is calculated within the quark-meson coupling model. Our results show that the $\eta$ and ${\eta }^{\prime }$ mesons are expected to form mesic nuclei with all the nuclei considered. However, the signal for the formation of the $\eta$- and ${\eta }^{\prime }$-mesic nuclei may be difficult to identify experimentally due to possible large widths.

11 pages, 4 figures, 6 tables

References in corpus (9)

• Meson-nucleus potentials and the search for meson-nucleus bound states
• η- and η'-mesic nuclei and U_A(1) anomaly at finite density
• Pseudoscalar neutral mesons in hot and dense matter
• Measurement of excitation spectra in the ${}^{12}$C$(p,d)$ reaction near the ${\eta }^{\prime }$ emission threshold
• Determination of the real part of the η'-Nb optical potential
• Momentum dependence of the imaginary part of the $\omega$- and ${\eta }^{\prime }$-nucleus optical potential
• Search for ${\eta }^{\prime }$ bound nuclei in the ${}^{12}\mathrm{C}(\gamma ,p)$ reaction with simultaneous detection of decay products
• $\eta$-nucleus interaction from the $d+d$ reaction around the $\eta$ production threshold
• Spectral function of the ${\eta }^{\prime }$ meson in nuclear medium based on phenomenological models

Cited by in corpus (4)

• The $\varphi NN,J/\psi NN,{\eta }_{c}NN$ systems based on HAL QCD interactions
• The ${\eta }^{\prime }N$ interaction from the ${\eta }^{\prime }p$ correlation function
• Medium modifications of $1P$-wave charmonia ${\chi }_{cJ}(1P)$ in cold nuclear matter
• Feasibility of the observation of ${\eta }^{\prime }$ mesic nuclei in the semi-exclusive ${}^{12}$C($p,dp$) reaction