Elsevier

Nuclear Physics B

Volume 150, 1979, Pages 326-344
Nuclear Physics B

Single direct photon production in pp collisions at √s = 53.2 GeV in the pt interval 2.3 to 5.7 GeV/c

https://doi.org/10.1016/0550-3213(79)90305-5Get rights and content

Abstract

We report the results of an experiment made at the CERN ISR to investigate the possible diret production of single photons in pp collisions at √s = 53.2 GeV at 90° and in the pt interval 2.3 to 5.7 GeV/c. The value of the ratio R = nγ/nπ0 is compatible with zero for low pt ⪅ 3 GeV/c but, in spite of the large error, shows a trend to increase for larger pt.

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Research supported by the US National Aeronautics and Space Administration and US Department of Energy.

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