TY  - JOUR
AU  - Dai, L. R.
AU  - Oset, E.
AU  - Feijoo, A.
AU  - Molina, R.
AU  - Roca, L.
AU  - Martinez Torres, A.
AU  - Khemchandani, K. P.
PY  - 2022
DA  - 2022//
TI  - Masses and widths of the exotic molecular B-(s)(()*B-)((s))(*()) states
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 074017
EP  - 11pp
VL  - 105
IS  - 7
PB  - Amer Physical Soc
AB  - We study the interaction of the doubly bottom systems BB, B*B, BsB, B-s*B, B*B*, B*B-S, B*B-s*, BsBs, BsBs*, B-s*B-s* by means of vector meson exchange with Lagrangians from an extension of the local hidden gauge approach. The full s-wave scattering matrix is obtained implementing unitarity in coupled channels by means of the Bethe-Salpeter equation. We find poles below the channel thresholds for the attractively interacting channels B*B in I = 0, B-s*B – B*B-s in I = 1/2, B* B* in I = 0, and B-s*B* in I = 1/2, all of them with J(P) = 1(+). For these cases the widths are evaluated identifying the dominant source of imaginary part. We find binding energies of the order of 10-20 MeV, and the widths vary much from one system to the other: of the order of 10-100 eV for the B* B system and B-s*B – B* B-s, about 6 MeV for the B*B* system and of the order of 0.5 MeV for the B-s*B* system.
SN  - 2470-0010
UR  - https://arxiv.org/abs/2201.04840
UR  - https://doi.org/10.1103/PhysRevD.105.074017
DO  - 10.1103/PhysRevD.105.074017
LA  - English
N1  - WOS:000809898400002
ID  - Dai_etal2022
ER  -