M. Sarmiento et al., INCLUSIVE NEUTRAL-D PRODUCTION IN 205-GEV C PI-BE INTERACTIONS/, Physical review. D. Particles and fields, 45(7), 1992, pp. 2244-2248
Hadronic charm production was investigated with a two-arm magnetic spe
ctrometer. The experiment was triggered on muons from the semileptonic
decay of charm particles in one arm while reconstructing the mass of
the associatively produced partners in the other arm. An excess of 153
+/- 46 combinations above background for the neutral D --> K-pi mode
was observed. This corresponds to a model-dependent DDBAR production c
ross section of 41 +/- 12(-11)+15-mu-b per nucleon, where the first un
certainty is statistical and the second is systematic.