Cabibbo-Suppressed Decays of D⁺ to pi⁺ pi⁰, K⁺ K⁰, and K⁺ pi⁰

2003/06/05 by K. Arms, Arms, K.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0306019

8 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS,Submitted as EPS-371, Aachen, Germany. Several Corrections made that did not change branching fractions but did effect interpretation

openalex publication_date 2003/06/05 · arxiv created 2003/07/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Using a data sample corresponding to 13.7 fb^-1 collected with the CLEO II and II.V detectors, we report new branching fraction measurements for two Cabibbo-suppressed decay modes of the D⁺ meson: Br(D⁺ to pi⁺ pi⁰) = (1.3 +/- 0.2) x 10^-3 and Br(D⁺ to K⁰ K⁺) = (5.2 +/- 0.6) x 10^-3 which are significant improvements over past measurements. The errors include statistical and systematical uncertainties as well as the uncertainty in the absolute D⁺ branching fraction scale. We also set the first 90% confidence level upper limit on the branching fraction of the doubly Cabibbo-suppressed decay mode Br(D⁺ to K⁺ pi⁰) < 4.2 x 10^-4.

Related

• Branching Fraction for the Doubly-Cabibbo-Suppressed Decay D⁺ to K^_ pi⁰
• Amplitude analysis and branching fraction measurement of the Cabibbo-favored decay D⁺ → K^-π⁺π⁺π⁰
• Measurement of the branching fraction of the doubly Cabibbo-suppressed decay D⁰→ K⁺π^-π⁰ and search for D⁰→ K⁺π^-π⁰π⁰
• Measurements of the absolute branching fractions of the doubly Cabibbo-suppressed decays D⁺→ K⁺π⁰, D⁺→ K⁺η and D⁺→ K⁺η^′
• Measurement of the doubly Cabibbo-suppressed decay D⁺→ K⁺π⁺π^-π⁰ with semileptonic tags