TY  - JOUR
AU  - Sakai, S.
AU  - Roca, L.
AU  - Oset, E.
PY  - 2017
DA  - 2017//
TI  - Charm-beauty meson bound states from B (B*)D(D*) and interaction B (B*)(D)over-bar((D)over-bar*)
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 054023
EP  - 9pp
VL  - 96
IS  - 5
PB  - Amer Physical Soc
AB  - We evaluate the s-wave interaction of pseudoscalar and vector mesons with both charm and beauty to investigate the possible existence of molecular BD, B* D, BD*, B* D*, B (D) over bar, B* (D) over bar, B (D) over bar*, or B* (D) over bar* meson states. The scattering amplitude is obtained implementing unitarity starting from a tree level potential accounting for the dominant vector meson exchange. The diagrams are evaluated using suitable extensions to the heavy flavor sector of the hidden gauge symmetry Lagrangians involving vector and pseudoscalar mesons, respecting heavy quark spin symmetry. We obtain bound states at energies above 7 GeV for BD (J(P) = 0(+)), B* D (1(+)), BD* (1(+)), and B* D* (0(+), 1(+,) 2(+)), all in isospin 0. For B (D) over bar (0(+)), B* (D) over bar (1(+)), B (D) over bar* (1(+)), and B* (D) over bar* (0(+), 1(+), 2(+)) we also find similar bound states in I = 0, but much less bound, which would correspond to exotic meson states with _ (b) over bar and (c) over bar quarks, and for the I = 1 we find a repulsive interaction. We also evaluate the scattering lengths in all cases, which can be tested in current investigations of lattice QCD.
SN  - 2470-0010
UR  - http://arxiv.org/abs/1704.02196
UR  - https://doi.org/10.1103/PhysRevD.96.054023
DO  - 10.1103/PhysRevD.96.054023
LA  - English
N1  - WOS:000411579700002
ID  - Sakai_etal2017
ER  -