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EVIDENCE FOR POSSIBLE O(6) SYMMETRY IN A=120-200 MASS REGION
The prediction of the O(6) symmetry limit of interacting boson model are reviewed for A=120-200 mass region. Evidence of functional relationship of the coefficient B and C from the energy expression of O(6) limit with N, Z and R4/2(= E4g/E2g) are presented, B(E2 2g- > 0g); with the product of number of valence proton and number of valence neutron NpNn and neutron number N are also illustrated.