Direct CP violation in two-body hadronic charmed meson decays

Details Direct CP violation in two-body hadronic charmed meson decays Direct CP violation in two-body hadronic charmed meson decays

2012-01-03

arxiv.org/abs/1201.0785v3

Phys. Rev. D 85, 034036 (2012)

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 2 figures; typos corrected

Scientific paper

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 $a_{dir}^{\rm (tree)}$ at tree level can be reliably estimated. In general, it lies in the range $10^{-4}

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