Observation of Radiative Decay $D^0 \to ϕγ$
| dc.creator | The Belle Collaboration | |
| dc.creator | Tajima, O. | |
| dc.date | 2003-08-15 | |
| dc.date | 2004-01-27 | |
| dc.date.accessioned | 2026-07-07T12:02:03Z | |
| dc.date.available | 2026-07-07T12:02:03Z | |
| dc.description | We report the observation of the decay $D^{0} \to ϕγ$ with a statistical significance of $5.4σ$ 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 $D^0 \to ϕπ^0$, $ϕη$ are also observed for the first time. We measure branching fractions $\br(D^{0} \to ϕγ) = [ 2.60^{+0.70}_{-0.61} \stat {}^{+0.15}_{-0.17} \syst ] \times 10^{-5}$, $\br(D^{0} \to ϕπ^{0}) = [ 8.01 \pm 0.26 \stat \pm 0.47 \syst ] \times 10^{-4}$, and $\br(D^{0} \to ϕη) = [ 1.48 \pm 0.47 \stat \pm 0.09 \syst ] \times 10^{-4}$. | |
| dc.description | 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 | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0308037 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0308037 | |
| dc.identifier | Phys.Rev.Lett.92:101803,2004 | |
| dc.identifier | doi:10.1103/PhysRevLett.92.101803 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207308 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Observation of Radiative Decay $D^0 \to ϕγ$ | |
| dc.type | text |