Experimental Bounds on Masses and Fluxes of Nontopological Solitons
  We have re-analyzed the results of various experiments which were not originally interested as searches for the Q-ball or the Fermi-ball. Based on these analyses, in addition to the available data on Q-balls, we obtained rather stringent bounds on flux, mass and typical energy scale of Q-balls as well as Fermi-balls. In case these nontopological solitons are the main component of the dark matter of the Galaxy, we found that only such solitons with very large quantum numbers are allowed. We also estimate how sensitive future experiments will be in the search for Q-balls and Fermi-balls. 
J. Arafune (Institute for Cosmic Ray Research), T. Yoshida (Institute   for Cosmic Ray Research), S. Nakamura (Yokohama Nati...