Three-body decay of $^{6}$Be
  Three-body correlations for the ground-state decay of the lightest two-proton emitter $^{6}$Be are studied both theoretically and experimentally. Theoretical studies are performed in a three-body hyperspherical-harmonics cluster model. In the experimental studies, the ground state of $^{6}$Be was formed following the $\alpha$ decay of a $^{10}$C beam inelastically excited through interactions with Be and C targets. Excellent agreement between theory and experiment is obtained demonstrating the existence of complicated correlation patterns which can elucidate the structure of $^{6}$Be and, possibly, of the A=6 isobar. 
L. V. Grigorenko, T. D. Wiser, K. Mercurio, R. J. Charity, R. Shane,   L. G. Sobotka, J. M. Elson, A. Wuosmaa, A. Banu, M. M...