A study of the production of high-p/sub T/ pi /sup 0/s at the CERN Intersecting Storage Rings

The inclusive cross-section for pi /sup 0/ production near 90 degrees in pp collisions at the CERN Intersecting Storage Rings has been studied fro the p/sub T/ range 3<P/sub T/<16 GeV/c at four different centre-of-mass energies ( square root s=30.6, 44.8, 52.7, and 62.8 Ge V). In this experiment the two photons from the pi /sup O/ to gamma gamma decay were resolved and measured separately for p/sub T/ values up to 10 GeV/c. Results indicate an agreement with the p/sub T//sup -8 / behaviour for the lower values of p/sub T/ and a slower decrease of the cross-section for the higher values of p/sub T/. The high-p/sub T/ data deviate from the scaling expression p/sub T//sup -n/F(x/sub T/), which holds for the lower p/sub T/ values (p/sub T/<8 GeV/c). (15 refs).