Study on theΥ(1S)→BcMWeak Decays

Abstract

Motivated by the prospects of the potential Υ(1 ) particle at high-luminosity heavy-flavor experiments, we studied the Υ(1 ) → weak decays, where = , , ( * ) . The nonfactorizable contributions to hadronic matrix elements are taken into consideration with the QCDF approach. It is found that the CKM-favored Υ(1 ) → decay has branching ratio of O(10 −10 ), which might be measured promisingly by the future experiments.

Study ofB¯d,s⁎0→Dd,sChang1, Hu2, Chang3 et al. 2016Advances in High Energy PhysicsSelf Cite1000View full textAdd to dashboardCite

“…As a result, the amplitude is unphysical, and the strong phase, which is essential for evaluating CP asymmetry, cannot be calculated. In order to remedy these deficiencies and take into account the nonfactorizable contribution, the QCDF approach is proposed by BBNS [21,22] and has been widely used to deal with the hadronic matrix elements (e.g., [39][40][41][42][43][44][45][46][47][48][49]). Within the framework of QCDF, in the heavyquark limit ( ≫ Λ QCD ), the hadronic matrix elements ⟨ | | * ⟩ are expressed by the factorization formula [21,22]:…”