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Observation of Radiative Decay $D^0 \to ����$
- Publication Year :
- 2003
- Publisher :
- arXiv, 2003.
-
Abstract
- We report the observation of the decay $D^{0} \to ����$ with a statistical significance of $5.4��$ in $78.1 \ifb$ of data collected by the Belle experiment at the KEKB $e^+ e^-$ collider. This is the first observation of a flavor-changing radiative decay of a charmed meson. The Cabibbo- and color-suppressed decays $D^0 \to ����^0$, $����$ are also observed for the first time. We measure branching fractions $\br(D^{0} \to ����) = [ 2.60^{+0.70}_{-0.61} \stat {}^{+0.15}_{-0.17} \syst ] \times 10^{-5}$, $\br(D^{0} \to ����^{0}) = [ 8.01 \pm 0.26 \stat \pm 0.47 \syst ] \times 10^{-4}$, and $\br(D^{0} \to ����) = [ 1.48 \pm 0.47 \stat \pm 0.09 \syst ] \times 10^{-4}$.<br />9 pages, 4 figures, Belle Preprint 2003-24, KEK Preprint 2003-75, updated version of BELLE-CONF-0346 (contributed paper to the XXI International Symposium on Lepton and Photon Interactions at High Energies,Fermilab Aug 11-16,2003). to appear in Phys. Rev. Lett
- Subjects :
- High Energy Physics - Experiment (hep-ex)
FOS: Physical sciences
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi...........f585a83054f186b1bbc2db2f83945b93
- Full Text :
- https://doi.org/10.48550/arxiv.hep-ex/0308037