Branching Fraction for the Doubly-Cabibbo-Suppressed Decay D^+ to K^_ pi^0

TL;DR

This paper reports a measurement of the branching fraction for the doubly-Cabibbo-suppressed decay D+ to K+ pi0 using data from the CLEO-c detector, providing a more precise value for this rare decay mode.

Contribution

First measurement of the branching fraction for D+ to K+ pi0 decay using CLEO-c data, with detailed uncertainty analysis.

Findings

Branching fraction B(D+ to K+ pi0) = (2.25 +- 0.36 +- 0.15 +- 0.07) x 10^{-4}

Uncertainties include statistical, systematic, and reference mode errors

Results are preliminary and contribute to understanding charm decay dynamics.

Abstract

We present a measurement of the branching fraction for the doubly-Cabibbo-suppressed decay D+ to K+ pi0, using 281 pb-1 of data accumulated with the CLEO-c detector on the psi(3770) resonance. We find B(D+ to K+ pi0) = (2.25 +- 0.36 +- 0.15 +- 0.07) times 10^{-4}, where the first uncertainty is statistical, the second is systematic, and the last error is due to the uncertainty in the reference mode. The results presented in this document are preliminary.