2025/09/10 by Teng, Wei, Wang, Sheng Nan, Zhao, Xian Zhi +1
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)
paper · doi:10.48550/arxiv.2509.08240
A theoretical investigation has been carried out to examine the effects of dynamical triaxility and configuration mixing on the B(E2) anomaly, characterized by B4/2=B(E2;41+→21+)/B(E2;21+→01+)<1.0 and R4/2=E(41+)/E(21+)≥2.0, within the framework of the interacting boson model (IBM). The results indicate that the effective γ deformation may undergo substantial changes with increasing angular momentum in the B(E2) anomaly system governed by an IBM Hamiltonian involving rotor-like terms. Further calculations reveal that mixing between normal and intruder states may facilitate the emergence of B(E2) anomaly, thereby providing additional theoretical insights into this unusual phenomenon.