Hiroyuki Fujioka, Kenta Itahashi, Hans Geissel, Ryugo S. Hayano, Satoru Hirenzaki, Satoshi Itoh, Daisuke Jido, Volker Metag, Hideko Nagahiro, Mariana Nanova, Takahiro Nishi, Kota Okochi, Haruhiko Outa, Ken Suzuki, Takatoshi Suzuki, Yoshiki K. Tanaka, Helmut Weick
The eta' meson mass may be reduced due to partial restoration of chiral symmetry. If this is the case, an eta'-nucleus system may form a nuclear bound state. We plan to carry out a missing-mass spectroscopy with the 12C(p,d) reaction at GSI-SIS. Peak structures corresponding to such a bound state may be observed even in an inclusive measurement, if the decay width is narrow enough.
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http://arxiv.org/abs/1208.4932
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