Possible molecular states in $B^{(*)}B^{(*)}$ scatterings

We present that, if unitarizing the B(*)B(*) scattering amplitudes in the constituent interchange model, one can find two bound-state poles for (Itot,Stot)=(0,1) BB* and B*B* system, which correspond to two I(JP)=0(1+) doubly bottomed molecular states. Furthermore, it is noticed that the virtual states in (1,0) BB, (1,1) BB*, (1,0) B*B*, and (1,2) B*B* systems could produce enhancements of the squared moduli of the scattering T matrix just above the related thresholds, which might correspond to I(JP)=1(0+), 1(1+), and 1(2+) doubly bottomed molecular states, respectively. The calculation may be helpful for searching for the doubly bottomed molecular state in future experiments.