Asymmetries from the interference between Cabibbo-favored and doubly-Cabibbo-suppressed D decays

TL;DR

This paper analyzes interference effects between different D meson decay modes, incorporating SU(3) symmetry breaking, and estimates asymmetries that align well with experimental data.

Contribution

It provides a phenomenological analysis of D meson decays including symmetry breaking effects and estimates asymmetries from interference, matching current measurements.

Findings

Estimated three asymmetries $R(D^0)$, $R(D^+)$, and $R(D_s^+)$.

Results agree well with experimental data.

Incorporated SU(3) symmetry breaking effects.

Abstract

A phenomenological analysis of $D\to K\pi$ and $D_s^+\to K K $decays including both Cabibbo-favored and doubly-Cabibbo-suppressed modes have been presented by employing the present experimental data. SU(3) symmetry breaking effects from the decay constants and form factors have been taken into account in the analysis. Three asymmetries, $R(D^0)$, $R(D^+)$, and $R(D_s^+)$, which are generated through interference between Cabbibo-favored and doubly- Cabibbo-suppressed decays, are estimated. Theoretical results agree well with the current measurements.