Measurements of absolute branching fractions for $D$ mesons decays into two pseudoscalar mesons

Abstract

Using a data sample of $e^{+}{e}^{-}$ collision data with an integrated luminosity of 2.93 fb${}^{-1}$ taken at the center-of-mass energy $\sqrt{s}=3.773$~GeV with the BESIII detector operating at the BEPCII storage rings, we measure the absolute branching fractions of the two-body hadronic decays $D^{+}\to {\pi }^{+}{\pi }^0$, $K^{+}{\pi }^0$, ${\pi }^{+}\eta$, $K^{+}\eta$, ${\pi }^{+}{\eta }^{\prime }$, $K^{+}{\eta }^{\prime }$, $K_S^0{\pi }^{+}$, $K_S^0{K}^{+}$, and $D^0\to {\pi }^{+}{\pi }^{-}$, $K^{+}{K}^{-}$, $K^{\mp }{\pi }^{\pm }$, $K_S^0{\pi }^0$, $K_S^0\eta$, $K_S^0{\eta }^{\prime }$. Our results are consistent with previous measurements within uncertainties. Among them, the branching fractions for $D^{+}\to {\pi }^{+}{\pi }^0$, $K^{+}{\pi }^0$, ${\pi }^{+}\eta$, ${\pi }^{+}{\eta }^{\prime }$, $K_S^0{\pi }^{+}$, $K_S^0{K}^{+}$ and $D^0\to K_S^0{\pi }^0$, $K_S^0\eta$, $K_S^0{\eta }^{\prime }$ are determined with improved precision compared to the world average values.

arXiv comment9 pages, 3 figures

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• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
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• Observation of the leptonic decay $D^{+}\to {\tau }^{+}{\nu }_{\tau }$
• Measurement of the absolute branching fractions for purely leptonic $D_s^{+}$ decays
• Improved measurement of the strong-phase difference ${\delta }_D^{K\pi }$ in quantum-correlated $D\bar{D}$ decays
• Search for the rare semi-leptonic decay $J/\psi \to D^{-}{e}^{+}{\nu }_e+c.c.$
• Measurements of Absolute Branching Fractions of $D^0\to K_L^0\varphi$, $K_L^0\eta$, $K_L^0\omega$, and $K_L^0{\eta }^{\prime }$
• Observation of the Decay $D^0\to {\rho }^{-}{\mu }^{+}{\nu }_{\mu }$
• Experimental dataset from BESIII detector at Beijing electron positron collider
• Measurement of branching fractions for $D$ meson decaying into $\varphi$ meson and a pseudoscalar meson
• First measurement of polarizations in the decay $D^0\to \omega \varphi$
• Observation of $D^{+}\to f_0(500){\mu }^{+}{\nu }_{\mu }$ and study of $D^{+}\to {\pi }^{+}{\pi }^{-}{\ell }^{+}{\nu }_{\ell }$ decay dynamics
• Charming synergies: the role of charm-threshold studies in the search for physics beyond the Standard Model
• Measurement of Singly Cabibbo-Suppressed Decays $D\to \omega \pi \pi$