Study of the BB*/DD* bound states in a Bethe-Salpeter approach

الأصل · EN

In this work the BB*/DD* system is studied in the Bethe-Salpeter approach with quasipotential approximation. In our calculation both direct and cross diagrams are included in the one-boson-exchange potential. The numerical results indicate the existence of a isoscalar bound state DD* with JPC=1⁺⁺, which may be related to the X(3872). In the isovector sector, no bound state is produced from the interactions of DD* and BB*, which suggests the molecular state explanations for Zb(10610) and Zc(3900) are excluded.