Direct CP violation in two-body hadronic charmed meson decays
Journal
Physical Review D - Particles, Fields, Gravitation and Cosmology
Journal Volume
85
Journal Issue
3
Date Issued
2012
Author(s)
Cheng, H.-Y.
Abstract
Motivated by the recent observation of CP violation in the charm sector by LHCb, we study direct CP asymmetries in the standard model (SM) for the singly Cabibbo-suppressed two-body hadronic decays of charmed mesons using the topological-diagram approach. In this approach, the magnitude and the phase of topological weak annihilation amplitudes, which arise mainly from final-state rescattering, can be extracted from the data. Consequently, direct CP asymmetry adir(tree) at tree level can be reliably estimated. In general, it lies in the range 10 -4
Type
journal article