Cabibbo-suppressed decays ofD+→π+π0,K+K0,K+π0

6 April 2004

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 69 (7) , 071102
https://doi.org/10.1103/physrevd.69.071102

Abstract

Using a

13.7 {fb}^{- 1}

data sample 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:

B {(D}^{+} \to π^{+} π^{0}) = (1.31 \pm 0.17 \pm 0.09 \pm 0.09) \times 10^{- 3}

and

B {(D}^{+} \to K^{+} K^{0}) = (5.24 \pm 0.43 \pm 0.20 \pm 0.34) \times 10^{- 3}

which are significant improvements over past measurements. The errors reflect 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

B {(D}^{+} \to K^{+} π^{0}) < 4.2 \times 10^{- 4} .

Keywords

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Version 1, 2003-09-22, ArXiv

This publication has 9 references indexed in Scilit:

Study of the Cabibbo-suppressed decay modes D0→π−π+ and D0→K−K+
Physics Letters B, 2003
Review of Particle Properties
Physical Review D, 2002
$SU (3)$ breaking and $D^{0} - D^{0}$ mixing
Physical Review D, 2002
The CLEO II silicon vertex detector
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1998
Analyses of $D^{+} \to K_{S}^{0} K^{+}$ and $D^{+} \to K_{S}^{0} π^{+}$
Physical Review Letters, 1997
SU(3) breaking effects in charmed meson decays
Physics Letters B, 1994
Measurement of theD→ππ branching fractions
Physical Review Letters, 1993
The CLEO II detector
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1992
Analysis of two-body decays of charm mesons using the quark-diagram scheme
Physical Review D, 1987