论文部分内容阅读
We study two-body B_((c))→M_c(π,K) and semileptonic B_c→M_cl~-v_1 decays with M_c=(J/φ,X_c~0),where X_c~0=X~0(3872) is regarded as the tetraquark state ccuu(dd).With the decay constant f_x_c~O=(234±52) MeV determined from the data,we predict that B(B