Measurements of the cross section for the reaction $p+p\to {\pi }^0+\mathrm{anything}$ have been completed. The data cover a range of incident proton energies 50-400 GeV, ${\pi }^0$ transverse momenta 0.3-4 GeV/c, and laboratory angles 30-275 mrad. The experiment was performed using the internal proton beam at the Fermi National Accelerator Laboratory. A lead-glass counter was used to detect photons from the decay of ${\pi }^0\text{'}\mathrm{s}$ produced by collisions in thin targets of hydrogen or carbon. Tables of the measured cross sections are presented.

• Received 24 September 1975

DOI:https://doi.org/10.1103/PhysRevD.14.1196