Conserved charge fluctuations can be used to probe the phase structure of strongly interacting nuclear matter in relativistic heavy-ion collisions. To obtain th
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