# In-medium $\eta^{\prime}$ mass and $\eta^{\prime}N$ interaction based on chiral effective theory

@article{Sakai2013InmediumM, title={In-medium \$\eta^\{\prime\}\$ mass and \$\eta^\{\prime\}N\$ interaction based on chiral effective theory}, author={Shuntaro Sakai and Daisuke Jido}, journal={Physical Review C}, year={2013}, volume={88}, pages={064906} }

The in-medium eta' mass and the eta'N interaction are investigated in an effective theory based on the linear realization of the SU(3) chiral symmetry. We find that a large part of the eta' mass is generated by the spontaneous breaking of chiral symmetry through the U_A (1) anomaly. As a consequence of this observation, the eta' mass is reduced in nuclear matter where chiral symmetry is partially restored. In our model, the mass reduction is found to be 80MeV at the saturation density…

## 34 Citations

Structure of $\eta^{\prime}$ mesonic nuclei in a relativistic mean field theory

- PhysicsProgress of Theoretical and Experimental Physics
- 2019

The structure and the energy spectrum of the $\eta^{\prime}$ mesonic nuclei are investigated in a relativistic mean field theory. One expects a substantial attraction for the $\eta^{\prime}$ meson in…

Possible relevance of softening of sigma meson to $\eta$ decay into 3$\pi$ in nuclear medium

- Physics
- 2015

We investigate the role for the softening of the scalar-isoscalar (sigma) meson in the $\eta\rightarrow\pi^+\pi^-\pi^0$ and $3\pi^0$ decay widths in the symmetric nuclear medium using a linear sigma…

Possible $\eta' d$ bound state and its $s$-channel formation in the $\gamma d \to \eta d$ reaction

- Physics
- 2018

We theoretically investigate a possibility of an $\eta ^{\prime} d$ bound state and its formation in the $\gamma d \to \eta d$ reaction. First, in the fixed center approximation to the Faddeev…

In-medium properties of mesons

- Physics
- 2017

In the project B.4 , the modification of meson properties (mass, width) in a nuclear medium has been studied in photoproduction of mesons off nuclear targets. This work has been motivated by…

Missing-mass spectroscopy of the ${}^{12}{\rm C}(p,d)$ reaction near the $\eta^\prime$-meson production threshold

- Physics
- 2017

Excitation-energy spectra of $^{11}$C nuclei near the $\eta^\prime$-meson production threshold have been measured by missing-mass spectroscopy using the $^{12}$C($p$,$d$) reaction. A carbon target…

Experimental results on the $\omega$- and $\eta′$-nucleus potential - on the way to mesic states

- Physics
- 2015

Different experimental approaches to determine the meson-nucleus optical potential are discussed. The experiments have been performed with the Crystal Barrel/TAPS detector system at the ELSA…

Symmetries and in-medium effects: Chiral symmetry breaking and modification of meson properties in a strongly interacting medium

- Physics
- 2014

Chiral symmetry is a fundamental symmetry of Quantum Chromodynamics (QCD) in the limit of vanishing quark masses. In the hadronic sector chiral symmetry is broken; otherwise chiral partners -…

Mesons in Nuclei and Partial Restoration of Chiral Symmetry

- Physics
- 2016

Recent topics on mesons in nuclei are discussed by especially emphasizing the role of the partial restoration of chiral symmetry in the nuclear medium. The spontaneously broken chiral symmetry in…

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