Measurement of the branching fractions of $D^{+}\to K^{+}{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$, $\ddot{I}•\ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$, $K_S^0{K}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0$, $K_S^0{K}^{+}\hat{I}\cdot$, and $K_S^0{K}^{+}\ddot{I}‰$ decays

Abstract

Using $20.3{\mathrm{fb}}^{-1}$ of $e^{+}{e}^{-}$ collision data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector operating at the BEPCII collider, the branching fractions of three hadronic charm meson decays, $D^{+}\to \ddot{I}•\ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$, $D^{+}\to K_S^0{K}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0$, and $D^{+}\to K_S^0{K}^{+}\ddot{I}‰$, are measured for the first time to be $(0.54\pm 0.19\pm 0.02)\times 10^{-4}$, $(2.51\pm 0.34\pm 0.14)\times 10^{-4}$, and $(2.02\pm 0.35\pm 0.10)\times 10^{-4}$, respectively. Futhermore, the branching fractions of $D^{+}\to K^{+}{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ and $D^{+}\to K_S^0{K}^{+}\hat{I}\cdot$ are measured with improved precision, yielding values of $(0.66\pm 0.11\pm 0.03)\times 10^{-4}$ and $(2.27\pm 0.22\pm 0.05)\times 10^{-4}$, respectively.

11 pages, 3 figures