采用微扰QCD方法,计算了纯树图无粲湮灭衰变Bc→KK过程中单胶子对强子矩阵元的辐射修正,结果表明该反应过程的分支比在10-7量级,在大型强子对撞机LHC上的可观测信号十分微弱.
In the framework of perturbative QCD approach,considering the radiative correction to the hadron matrix element due to one-gluon exchange,The research studies the charmless pure tree annihilation decay Bc→KK and finds that the branching raion is ~10-7.The signal is too tiny to be observed at LHC.