QCD factorization for exclusive non-leptonic B decays

by Gerhard BUCHALLA (CERN-TH)

Wednesday 1 Mar 2000, 14:00 → 14:15 Europe/Zurich

TH Auditorium (CERN)

Two-body non-leptonic B decays are a key source of information for understanding CP violation and the physics of flavour. They will be explored with unprecedented scope and precision by numerous experiments in the near future. The most important theoretical problem in describing these processes is the evaluation of hadronic matrix elements of the effective weak Hamiltonian. Using B Æpp as an example, we discuss a framework that was recently proposed to address this problem in QCD in the heavy quark limit. We argue that the matrix elements factorise to leading power in L_QCD/m_b, with calculable QCD corrections, which are computed to O (as). We will discuss the general idea and physical implications of the approach and briefly illustrate phenomenological applications in B Æp⁺p^- decays.