Observation of the Doubly Cabibbo-Suppressed Decay $D_s^{+}\to K^{+}{K}^{+}{\pi }^{-}$

Abstract

We report the first observation of the doubly Cabibbo-suppressed decay $D_s^{+}\to K^{+}{K}^{+}{\pi }^{-}$ using 605 fb${}^{-1}$ of data collected with the Belle detector at the KEKB asymmetric-energy $e^{+}{e}^{-}$ collider. The branching ratio with respect to its Cabibbo-favored counterpart $\mathcal{B}(D_s^{+}\to K^{+}{K}^{+}{\pi }^{-})$ / $\mathcal{B}(D_s^{+}\to K^{+}{K}^{-}{\pi }^{+})$ is (0.229$\pm 0.028\pm$0.012)%, where the first uncertainty is statistical and the second is systematic. We also report a significantly improved measurement of the doubly Cabibbo-suppressed decay $D^{+}\to K^{+}{\pi }^{+}{\pi }^{-}$, with a branching ratio $\mathcal{B}(D^{+}\to K^{+}{\pi }^{+}{\pi }^{-})$ / $\mathcal{B}(D^{+}\to K^{-}{\pi }^{+}{\pi }^{+})$=(0.569$\pm 0.018\pm$0.014)%.

References in corpus (2)

• Puzzles in Hyperon, Charm and Beauty Physics
• Search for ${\Lambda }_c^{+}\to p{K}^{+}{\pi }^{-}$ and $D_s^{+}\to K^{+}{K}^{+}{\pi }^{-}$ Using Genetic Programming Event Selection

Cited by in corpus (7)

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• First Observation of Doubly Cabibbo-Suppressed Decay of a Charmed Baryon: ${\Lambda }_c^{+}\to p{K}^{+}{\pi }^{-}$
• Evidence for CP Violation in the Decay $D^{+}\to K_S^0{\pi }^{+}$
• Measurement of the Branching Fraction of the Singly Cabibbo-Suppressed Decay ${\Lambda }_c^{+}\to \Lambda K^{+}$
• Observation of $D^{+}\to K^{+}{\eta }^{(\prime )}$ and Search for CP Violation in $D^{+}\to {\pi }^{+}{\eta }^{(\prime )}$ Decays
• Observation of the Doubly Cabibbo-Suppressed Decay $D^{+}\to K^{+}{\pi }^{+}{\pi }^{-}{\pi }^0$ and Evidence for $D^{+}\to K^{+}\omega$
• Study of the doubly Cabibbo-suppressed decays $D_s^{+}\to K^{+}{K}^{+}{\pi }^{-}$ and $D_s^{+}\to K^{+}{K}^{+}{\pi }^{-}{\pi }^0$