为了研究Υ(1S)→BcP,BcV的弱衰变,采用QCD因子化方法,考虑强子矩阵元中的非因子化贡献,计算了Υ(1S)→BcP,BcV弱衰变过程的分支比。结果表明Υ(1S)→BcP过程的分支比可以达到10-10量级,有望在未来高统计量的重味物理实验中被探测到。
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.