Measurements of branching fractions for inclusive K/K and K892 decays of neutral and charged D mesons

Using the data sample of about 33 pb^-1 collected at and around 3.773 GeV with the BES-II detector at the BEPC collider, we have studied inclusive K/K and K892 decays of D and D mesons. The branching fractions for the inclusive K/K and K892 decays are measured to be BF(D→K/KX)=(47.6±4.8±3.0)%, BF(D→K/KX)=(60.5±5.5±3.3)%, BF(D→KX)=(15.3±8.3±1.9)% and BF(D→KX)=(5.7±5.2±0.7)%. The upper limits of the branching fractions for the inclusive K892 decays are set to be BF(D→KX)<3.6% and BF(D→KX)<20.3% at 90% confidence level.