{
  "id": "1211.6774",
  "version": "v2",
  "published": "2012-11-28T22:51:36.000Z",
  "updated": "2012-12-13T09:14:21.000Z",
  "title": "$η^\\prime$ meson under partial restoration of chiral symmetry in nuclear medium",
  "authors": [
    "Daisuke Jido",
    "Shuntaro Sakai",
    "Hideko Nagahiro",
    "Satoru Hirenzaki",
    "Natsumi Ikeno"
  ],
  "comment": "4 pages, 3 figures. Talk given at the XI International Conference on Hypernuclear and Strange Particle Physics (HYP2012), Oct. 1-5, 2012, Barcelona, Spain. Accepted version. Some typos were corrected",
  "doi": "10.1016/j.nuclphysa.2012.12.097",
  "categories": [
    "nucl-th",
    "hep-ph",
    "nucl-ex"
  ],
  "abstract": "In-medium modification of the eta' mass is discussed in the context of partial restoration of chiral symmetry in nuclear medium. We emphasize that the U_A(1) anomaly effects causes the eta'-eta mass difference necessarily through the chiral symmetry breaking. As a consequence, the eta' mass is expected to be reduced by order of 100 MeV in nuclear matter where about 30% reduction of chiral symmetry takes place. The strong attraction relating to the eta' mass generation eventually implies that there should be also a strong attractive interaction in the scalar channel of the eta'-N two-body system. We find that the attraction can be strong enough to form a bound state.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2012-12-13T09:14:21.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "chiral symmetry",
      "nuclear medium",
      "partial restoration",
      "mass generation eventually implies",
      "in-medium modification"
    ],
    "tags": [
      "conference paper",
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier",
      "journal": "Nucl. Phys. A"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1204801,
      "adsabs": "2012arXiv1211.6774J"
    }
  }
}