Experimental Puzzles in Heavy Flavor Decays - Anomalously high $\eta'$   appearance in charmless strange B decays - Flavor SU(3) breaking in Charm   Decays
  Simple experimental tests are proposed which can clarify the origin for the anomalously high $\eta'$ appearance in charmless strange final states in $B$ decays and can investigate the the nature of SU(3) symmetry-breaking in weak heavy flavor decays. 
Harry J. Lipkin (Department of Particle Physics, Weizmann Institute of   Science. Faculty of Exact Sciences, Tel Aviv Univer...