Long-Lived Superheavy Particles in Dynamical Supersymmetry-Breaking Models in Supergravity

K. Hamaguchi, K. -I. Izawa, Yasunori Nomura +1

Superheavy particles of masses $\simeq 10^{13}-10^{14}GeV$ with lifetimes $\simeq 10^{10}-10^{22}years$ are very interesting, since their decays may account for the ultra-high en…