Observation of D0 (+) ? KS0 ?0 (+)? and improved measurement of D0 ?k-?+?

Abstract

Abstract: By analyzing an e+e-annihilation data sample with an integrated luminosity of 2.93 fb-1 taken at the center-of-mass energy of 3.773 GeV with the BESIII detector, we determine the absolute branching fractions of the hadronic decays D0?K-?+?, D0?KS0?0?, and D+?KS0?+? to be (3.392±0.044stat±0.085syst)%, (0.848±0.046stat±0.031syst)%, and (0.707±0.041stat±0.029syst)%, respectively. The accuracy of the branching fraction measurement of the decay D0?K-?+? is improved by a factor of seven compared to the world average value. The D0?KS0?0? and D+?KS0?+? decays are observed for the first time. © 2022 authors. Published by the American Physical Society.published article's title, journal citation, and DOI. Funded by SCOAP3.