Measurement of absolute branching fractions of Dₒ^+ hadronic decays

A bstract Using e + e − collision data collected at the BESIII detector at center-of-mass energies between 4. 128 and 4. 226 GeV, corresponding to an integrated luminosity of 7. 33 fb − 1, we determine the absolute branching fractions of fifteen hadronic Dₛ^+ D s + decays with a double-tag technique. In particular, we make precise measurements of the branching fractions B (Dₛ^+ K^+K^-^+) = (5. 49 0. 04 0. 07) \% B D s + → K + K − π + = 5. 49 ± 0. 04 ± 0. 07 %, B (Dₛ^+ KS⁰K^+) = (1. 50 0. 01 0. 01) \% B D s + → K S 0 K + = 1. 50 ± 0. 01 ± 0. 01 % and B (Dₛ^+ K^+K^-^+⁰) = (5. 50 0. 05 0. 11) \% B D s + → K + K − π + π 0 = 5. 50 ± 0. 05 ± 0. 11 %, where the first uncertainties are statistical and the second ones are systematic. The CP asymmetries in these decays are also measured and all are found to be compatible with zero.