Abstract：Motivated by the potential of Υ( 1S) particle at high-luminosity heavy-flavor experiments,the Υ( 1S) →BcP,BcV weak decays is studied. The nonfactorizable contributions to hadronic matrix elements are taken into account within the QCD factorization approach. It is found that the CKM-favored Υ( 1S) →BcP decay has branching ratio ~ 10- 10,and might be measured promisingly by the future experiments.

Keyword：Υ(1S) meson;branching ratio;weak decay;QCD factorization;