Comparison of pion- and photon-induced reactions on 12C

Creators: McKeown, R. D.; Schiffer, J. P.; Jackson, H. E.; Paul, M.; Sanders, S. J.; Specht, J. R.; Stephenson, E. J.; Redwine, R. P.; Segel, R. E.; Arends, J.; Eyink, J.; Hartmann, H.; Hegerath, A.; Mecking, B.; Nöldeke, G.; Rost, H.

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Abstract

The proton spectra from pion- and photon-induced reactions on 12C at the Δ(3/2,3/2) resonance are found to be very similar in shape, and in their variation with angle. It seems reasonable to assume that these protons arise from a common reaction mechanism (Δ production) for the two projectiles. The absolute cross sections for producing protons with pions and with photons are in roughly the same ratio as the total inelastic pion yield to the total photopion yield.

Additional Information

©1980 The American Physical Society. Received 8 September 1980. This work was supported in part by the U.S. Department of Energy, the National Science Foundation, and by the Bundesministerium fur Forschung und Technologie.

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