Model-Independent Analysis of CP Violation in Charmed Meson Decays

TL;DR

This paper provides a model-independent analysis of CP violation in charmed meson decays, using topological diagrams and considering all penguin contributions to predict direct CP asymmetries.

Contribution

It introduces a comprehensive, model-independent framework incorporating all penguin amplitudes and SU(3) breaking effects to analyze CP violation in charmed meson decays.

Findings

Extracted topological amplitude magnitudes and phases from experimental data.

Predicted CP asymmetries for unmeasured decay modes.

Highlighted the significance of penguin contributions in CP violation.

Abstract

We present a model-independent analysis of CP violation, inspired by recent experimental observations, in charmed meson decays. The topological diagram approach is used to study direct CP asymmetries for singly Cabibbo-suppressed two-body hadronic decays of charmed mesons. We extract the magnitudes and relative phases of the corresponding topological amplitudes from available experimental information. In order to get more precise and reliable estimates of direct CP asymmetries, we take into account contributions from all possible strong penguin amplitudes, including the internal $b$-quark penguin contributions. We also study flavor SU(3) symmetry breaking effects in these decay modes and consequently, predict direct CP asymmetries of unmeasured modes.