Abstract
The properties of the weakly-bound
S(L=0)−
state in the
p
¯
dt
ion are investigated with the use of the results of highly accurate computations. The hyperfine structure splitting of this ion is investigated. We also evaluate the life-time of the
p
¯
dt
ion against the nuclear
(d,t)−
fusion and discuss a possibility to evaluate the corresponding annihilation rate(s).