Author(s): J. Dey, U. Datta, O. Tengblad, P. Das, A. Rahaman, B. K. Agrawal, S. Chakraborty, A. Gottberg, M. Kowalska, K. Mahata, S. Mandal, M. Madurga, E. Nacher, E. Rapisarda, N. Warr, W. Sengupta, C. Sharma, and T. Stora The multifaceted decay properties of $^{116}\mathrm{Cs}$ near the proton drip line have been studied at ISOLDE, CERN. More than six new unbound states of $^{116}\mathrm{Xe}$ have been identified. A novel phenomenon of low energy isoscalar octupole resonance has been observed. After proton decay, tha… [Phys. Rev. Lett. 137, 012501] Published Mon Jun 29, 2026