Search for Fingerprints of Tetrahedral Symmetry in $^{156}Gd$
  Theoretical predictions suggest the presence of tetrahedral symmetry as an explanation for the vanishing intra-band E2-transitions at the bottom of the odd-spin negative parity band in $^{156}Gd$. The present study reports on experiment performed to address this phenomenon. It allowed to determine the intra-band E2 transitions and branching ratios B(E2)/B(E1) of two of the negative-parity bands in $^{156}Gd$. 
Q.T. Doan (IPNL), D. Curien (DRS-IPHC), O. Stezowski (IPNL), J. Dudek   (DRS-IPHC), K. Mazurek (Niewodniczanski Institute of...