Nuclear bound state of eta'(958) and partial restoration of chiral symmetry in the eta' mass

@article{Jido2012NuclearBS,
  title={Nuclear bound state of eta'(958) and partial restoration of chiral symmetry in the eta' mass},
  author={Daisuke Jido and Hideko Nagahiro and Satoru Hirenzaki},
  journal={Physical Review C},
  year={2012},
  volume={85},
  pages={032201}
}
The in-medium mass of the $\eta^{\prime}$ meson is discussed in a context of partial restoration of chiral symmetry in nuclear medium. The $\eta^{\prime}$ mass is expected to be reduced by order of 100 MeV at the saturation density. The reduction is a consequence of the suppression of the anomaly effect on the $\eta^{\prime}$ mass induced by partial restoration of chiral symmetry. This strong attraction in $\eta^{\prime}$ nuclear systems does not accompany large absorption of $\eta^{\prime… 

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