  A novel method is proposed to measure eta'(958) meson bound states in 11C
nuclei by missing mass spectroscopy of the 12C(p,d) reaction near the eta'
production threshold. It is shown that peak structures will be observed
experimentally in an inclusive measurement in case that the in-medium eta' mass
reduction is sufficiently large and that the decay width of eta' mesic states
is narrow enough. Such a measurement will be feasible with the intense proton
beam supplied by the SIS synchrotron at GSI combined with the good energy
resolution of the fragment separator FRS.
