Measurements of D Meson Decays to Two Pseudoscalar Mesons

TL;DR

This paper reports precise measurements and upper limits of various D meson decay branching fractions into two pseudoscalar mesons, using data from the CLEO-c detector at specific resonance energies.

Contribution

It provides the first comprehensive set of measurements and limits for D->PP decay modes, including Cabibbo-favored, singly, and doubly-Cabibbo-suppressed channels.

Findings

Measured branching fractions for multiple D->PP decay modes.

Established upper limits for several suppressed decay channels.

Normalized results using well-known D decay modes.

Abstract

Using data collected on the psi(3770) resonance and near the Ds*+ Ds- peak production energy by the CLEO-c detector, we study the decays of the possible D->PP modes and report measurements of or upper limits on all branching fractions for Cabibbo-favored, singly-Cabibbo-suppressed, and doubly-Cabibbo-suppressed D->PP decays except modes involving K0L (and except D0->K+ pi-). We normalize with respect to the Cabibbo-favored D modes, D0->K- pi+, D+->K- pi+ pi+, and Ds+->K+ K0S.