Production of doubly heavy quarkonium associated with two heavy quarks via top quark decays
In this paper, we analyze the1→41\rightarrow 4decay channel for the production of doubly heavy quarkonium,(bc¯)(b\bar{c})or(cc¯)(c\bar{c}), via top-quark decays,t→(bc¯)+c+c+s¯t\to(b\bar{c})+c+c+\bar{s}andt→(cc¯)+b+c+s¯t\to(c\bar{c})+b+c+\bar{s}, within the framework of nonrelativistic QCD (NRQCD). The dominant contribution...