At the CERN intersecting storage ring the inclusive differential cross section ${\left[\frac{d\sigma }{d\sigma }\right]}_{y=1\mathrm{}}$ has been measured for $f^0$, $g^0$, ${K^{*}}^0\mathrm{}\left(1420\right)\mathrm{}$, and ${{\overline{K}}^{*}}^0\mathrm{}\left(1420\right)\mathrm{}$ production: We obtain 0.58±0.05 mb, 0.09±0.05 mb, 38±15 μb, and 26±13 μb, respectively. The corresponding total inclusive cross sections are estimated to be 2.62±0.26 mb, 0.40±0.22 mb, 154±60 μb, and 107±52 μb, respectively. The magnitude of the $K^{*}$ cross section implies a cross section of approximately 5 μb for production of a charmed $D\overline{D}$ pair.

• Received 12 September 1978

DOI:https://doi.org/10.1103/PhysRevLett.41.1761