Spectroscopy of η′-nucleus bound states at GSI and FAIR — very preliminary results and future prospects —

• DOI: 10.1007/s10751-015-1145-9
• Publication Date: 2015-03-05T08:52:02Z
• Authors: H. Fujioka; Y. Ayyad; J. Benlliure; K.-T. Brinkmann; S. Friedrich; H. Geissel; J. Gellanki; C. Guo; E. Gutz; E. Haettner; M. N. Harakeh; R. S. Hayano; Y. Higashi; S. Hirenzaki; C. Hornung; Y. Igarashi; N. Ikeno; K. Itahashi; M. Iwasaki; D. Jido; N. Kalantar-Nayes...; R. Kanungo; R. Knoebel; N. Kurz; V. Metag; I. Mukha; T. Nagae; H. Nagahiro; M. Nanova; T. Nishi; H. J. Ong; S. Pietri; A. Prochazka; C. Rappold; M. P. Reiter; J. L. Rodríguez-S...; C. Scheidenberger; H. Simon; B. Sitar; P. Strmen; B. Sun; K. Suzuki; I. Szarka; M. Takechi; Y. K. Tanaka; I. Tanihata; S. Terashima; Y. N. Watanabe; H. Weick; E. Widmann; J. S. Winfield; X. Xu; H. Yamakami; J. Zhao
• Keywords: Anomaly (physics)

The possible existence of ��'-nucleus bound states has been put forward through theoretical and experimental studies. It is strongly related to the ��' mass at finite density, which is expected to be reduced because of the interplay between the $U_A(1)$ anomaly and partial restoration of chiral symmetry. The investigation of the C(p,d) reaction at GSI and FAIR, as well as an overview of the experimental program at GSI and future plans at FAIR are discussed.<br/>7 pages, 3 figures; talk at the International Conference on Exotic Atoms and Related Topics (EXA2014), Vienna, Austria, 15-19 September 2014. in Hyperfine Interactions (2015)<br/>