Measurements of the absolute branching fractions and $CP$ asymmetries for $D^{+}\to K_{S,L}^0{K}^{+}({\pi }^0)$

Abstract

Using $e^{+}{e}^{-}$ collision data corresponding to an integrated luminosity of 2.93 fb${}^{-1}$ taken at a center-of-mass energy of 3.773 GeV with the BESIII detector, we determine the absolute branching fractions $\mathcal{B}(D^{+}\to K_S^0{K}^{+})$ = $(3.02\pm 0.09\pm 0.08)\times 10^{-3}$, $\mathcal{B}(D^{+}\to K_S^0{K}^{+}{\pi }^0)$ = $(5.07\pm 0.19\pm 0.23)\times 10^{-3}$, $\mathcal{B}(D^{+}\to K_L^0{K}^{+})$ = $(3.21\pm 0.11\pm 0.11)\times 10^{-3}$, and $\mathcal{B}(D^{+}\to K_L^0{K}^{+}{\pi }^0)$ = $(5.24\pm 0.22\pm 0.22)\times 10^{-3}$, where the first and second uncertainties are statistical and systematic, respectively. The branching fraction \wbrksk is consistent with the world average value and the other three branching fractions are measured for the first time. We also measure the $CP$ asymmetries for the four decays and do not find a significant deviation from zero.

arXiv comment12 pages, 5 figures

References in corpus (9)

• Design and Construction of the BESIII Detector
• Coherent Exclusive Exponentiation For Precision Monte Carlo Calculations
• Measurement of the ${\mathrm{e}}^{+}{\mathrm{e}}^{-}\to {\pi }^{+}{\pi }^{-}$ Cross Section between 600 and 900 MeV Using Initial State Radiation
• Branching ratios and direct CP asymmetries in $D\to PP$ decays
• Study of decay dynamics and $CP$ asymmetry in $D^{+}\to K_L^0{e}^{+}{\nu }_e$ decay
• Nonleptonic two-body decays of charmed mesons
• Composite Dirac Neutrinos
• Search for CP Violation in the Dalitz-Plot Analysis of D+/- -> K+ K- pi+/-
• Absolute Branching Fractions of Cabibbo-Suppressed D --> K Kbar Decays

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• Study of the decay $D^{+}\to K^{\ast }(892{)}^{+}{K}_S^0$ in $D^{+}\to K^{+}{K}_S^0{\pi }^0$
• Search for New Hadronic Decays of $h_c$ and Observation of $h_c\to K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}{\pi }^0$
• Precise $K^{\ast }(892)\to K\pi$ branching fractions